Instagram has been limiting recommended political content by default without notifying users. Ars Technica reports: Instead, Instagram rolled out the change in February, announcing in a blog that the platform doesn't "want to proactively recommend political content from accounts you don't follow." That post confirmed that Meta "won't proactively recommend content about politics on recommendation surfaces across Instagram and Threads," so that those platforms can remain "a great experience for everyone." "This change does not impact posts from accounts people choose to follow; it impacts what the system recommends, and people can control if they want more," Meta's spokesperson Dani Lever told Ars. "We have been working for years to show people less political content based on what they told us they want, and what posts they told us are political."

To change the setting, users can navigate to Instagram's menu for "settings and activity" in their profiles, where they can update their "content preferences." On this menu, "political content" is the last item under a list of "suggested content" controls that allow users to set preferences for what content is recommended in their feeds. There are currently two options for controlling what political content users see. Choosing "don't limit" means "you might see more political or social topics in your suggested content," the app says. By default, all users are set to "limit," which means "you might see less political or social topics." "This affects suggestions in Explore, Reels, Feed, Recommendations, and Suggested Users," Instagram's settings menu explains. "It does not affect content from accounts you follow. This setting also applies to Threads." "Did [y'all] know Instagram was actively limiting the reach of political content like this?!" an X user named Olayemi Olurin wrote in an X post. "I had no idea 'til I saw this comment and I checked my settings and sho nuff political content was limited."

"This is actually kinda wild that Instagram defaults everyone to this," another user wrote. "Obviously political content is toxic but during an election season it's a little weird to just hide it from everyone?"

Emma Roth reports via The Verge: If you still haven't migrated your Oculus account to a Meta one, you might want to do that soon. In an email sent to users, the company says it will delete Oculus accounts on March 29th, 2024, preventing you from reactivating or retrieving your apps, in-app purchases, store credits, and more. You'll lose your achievements, friends list, and any content created with your Oculus account if you don't migrate to a Meta account before then.

Oculus accounts have been on the way out since 2020, when the company then known as Facebook started requiring new users to sign up with Facebook accounts instead. However, it added the ability to create a Meta account in 2022, offering an alternative to users who didn't want to link their Facebook account to their Quest headset. Meta stopped letting users log in to their Oculus accounts in January 2023. If you've got a Quest gathering dust in a drawer somewhere, now's your last chance to migrate your Oculus account to a Meta one.

You can migrate your account by heading to this page and signing up for a Meta account with the same email you've used for Oculus. From there, you'll be able to access all of the same games, data, and other purchases saved to your Oculus account.

An anonymous reader quotes a report from Ars Technica: Meta will soon begin "collecting anonymized data" from users of its Quest headsets, a move that could see the company aggregating information about hand, body, and eye tracking; camera information; "information about your physical environment"; and information about "the virtual reality events you attend." In an email sent to Quest users Monday, Meta notes that it currently collects "the data required for your Meta Quest to work properly." Starting with the next software update, though, the company will begin collecting and aggregating "anonymized data about... device usage" from Quest users. That anonymized data will be used "for things like building better experiences and improving Meta Quest products for everyone," the company writes.

A linked help page on data sharing clarifies that Meta can collect anonymized versions of any of the usage data included in the "Supplemental Meta Platforms Technologies Privacy Policy," which was last updated in October. That document lists a host of personal information that Meta can collect from your headset, including:

- "Your audio data, when your microphone preferences are enabled, to animate your avatar's lip and face movement"
- "Certain data" about hand, body, and eye tracking, "such as tracking quality and the amount of time it takes to detect your hands and body"
- Fitness-related information such as the "number of calories you burned, how long you've been physically active, [and] your fitness goals and achievements"
- "Information about your physical environment and its dimensions" such as "the size of walls, surfaces, and objects in your room and the distances between them and your headset"
- "Voice interactions" used when making audio commands or dictations, including audio recordings and transcripts that might include "any background sound that happens when you use those services" (these recordings and transcriptions are deleted "immediately" in most cases, Meta writes)
- Information about "your activity in virtual reality," including "the virtual reality events you attend"

The anonymized collection data is used in part to "analyz[e] device performance and reliability" to "improve the hardware and software that powers your experiences with Meta VR Products." Meta's help page also lists a small subset of "additional data" that headset users can opt out of sharing with Meta. But there's no indication that Quest users can opt out of the new anonymized data collection policies entirely. These policies only seem to apply to users who make use of a Meta account to access their Quest headsets, and those users are also subject to Meta's wider data-collection policies. Those who use a legacy Oculus account are subject to a separate privacy policy that describes a similar but more limited set of data-collection practices.

An anonymous reader quotes a report from The Register: A law firm acting on behalf of the Nevada Attorney General Aaron Ford has asked a state court to issue a temporary restraining order (TRO) denying minors access to encrypted communication in Meta's Messenger application. The motion for a TRO follows AG's Ford announcement of civil lawsuits on January 30, 2024 against five social media companies, including Meta [PDF], alleging the companies deceptively marketed their services to young people through algorithms that were designed to promote addiction. Nevada was not a party to the two multi-district lawsuits filed against Meta last October by 42 State Attorney General over claims that the social media company knowingly ignored evidence that its Facebook and Instagram services contribute to the mental harm of children and teens. Meta, which lately has been investing in virtual reality and large language models, is also being sued by hundreds of school districts around the US.

The Nevada court filing to obtain a TRO follows from AG Ford's initial complaint. The legal claim cites a statement from the National Center for Missing and Exploited Children that argues Meta's provision of end-to-end encryption in Messenger "without exceptions for child sexual abuse material placed millions of children in grave danger." The initial complaint's presumably supporting claims, however, have been redacted in the publicly viewable copy of the document. The motion for a TRO, which also contains redactions, contends that Meta -- by encrypting Messenger -- has thwarted state officials from enforcing the Nevada Unfair and Deceptive Trade Practices Act. "With this Motion, the State seeks to enjoin Meta from using end-to-end encryption (also called 'E2EE') on Young Users' Messenger communications within the State of Nevada," the court filing says. "This conduct -- which renders it impossible for anyone other than a private message's sender and recipient to know what information the message contains -- serves as an essential tool of child predators and drastically impedes law enforcement efforts to protect children from heinous online crimes, including human trafficking, predation, and other forms of dangerous exploitation."

Meta enabled E2EE by default for all users of Messenger in December 2023. But according to the motion for a TRO, "Meta's end-to-end-encryption stymies efforts by Nevada law enforcement, causing needless delay and even risking the spoliation of critical pieces of necessary evidence in criminal prosecutions." The injunction, if granted, would require Meta to disable E2EE for all Messenger users under 18 in Nevada. Presumably that would also affect minors using Messenger who are visiting the Silver State.

In a blog post today, Meta announced that it'll stop showing political content across Instagram and Threads unless users explicitly choose to have it recommended to them. The Verge reports: Meta announced that it's expanding an existing Reels policy that limits political content from people you're not following (including posts about social issues) from appearing in recommended feeds to more broadly cover the company's Threads and Instagram platforms. "Our goal is to preserve the ability for people to choose to interact with political content, while respecting each person's appetite for it," said Instagram head Adam Mosseri, announcing on Threads that the changes will be applied over the next few weeks. Facebook is also expected to roll out these new controls at a later, undisclosed date.

Users who still want to have content "likely to mention governments, elections, or social topics that affect a group of people and/or society at large" recommended to them can choose to turn off this limitation within their account settings. The changes will apply to public accounts when enabled and only in places where content is being recommended, such as Explore, Reels, in-feed recommendations, and suggested users. The update won't change how users view content from accounts they choose to follow, so accounts that aren't eligible to be recommended can still post political content to their followers via their feed and Stories.

For creators, Meta says that "if your account is not eligible to be recommended, none of your content will be recommended regardless of whether or not all of your content goes against our recommendations guidelines." When these changes do go live, professional accounts on Instagram will be able to use the Account Status feature to check if posting political content is impacting their eligibility for recommendation. Professional accounts can also use Account Status to contest decisions that revoke this eligibility, alongside editing, removing, or pausing politically related posts until the account is eligible to be recommended again.

Meta will start detecting and labeling images generated by artificial intelligence from Google and OpenAI's services, among others. According to Reuters, the company will use a set of invisible markers built into the files to help with the identification process. From the report: Meta will apply the labels to any content carrying the markers that is posted to its Facebook, Instagram and Threads services, in an effort to signal to users that the images -- which in many cases resemble real photos -- are actually digital creations, the company's president of global affairs, Nick Clegg, wrote in a blog post. The company already labels any content generated using its own AI tools. Once the new system is up and running, Meta will do the same for images created on services run by OpenAI, Microsoft, Adobe , Midjourney, Shutterstock and Alphabet's Google, Clegg said.

An anonymous reader quotes a report from TechCrunch: The recent surprise announcement that Meta will soon be shutting down its Facebook Groups API is throwing some businesses and social media marketers into disarray. On January 23, Meta announced the release of its Facebook Graph API v19.0, which included the news that the company would be deprecating its existing Facebook Groups API. The latter, which is used by developers and businesses to schedule posts to Facebook Groups, will be removed within 90 days, Meta said. This includes all the Permissions and Reviewable Features associated with the API, it also noted.

Meta explained that a major use case for the API was a feature that allowed developers to privately reply in Facebook Groups. For example, a small business that wanted to send a single message to a person who posted on their Facebook Group or who had commented in the group could be messaged through the API. However, Meta said that another change in the new v19.0 API would enable this feature, without the need for the Groups API. But developers told TechCrunch that the shutdown of the API would cause problems for companies that offer solutions to customers who want to schedule and automate their social media posts. [...]

What's more, developers tell us that Meta's motivation behind the API's shutdown is unclear. On the one hand, it could be that Facebook Groups don't generate ad revenue and the shutdown of the API will leave developers without a workaround. But Meta hasn't clarified if that's the case. Instead, Meta's blog post only mentioned one use case that would be addressed through the new v.19.0 API. [...] On Meta's forum for developers, one developer says they're "pretty shocked" by the company's announcement, noting their app relies on the Groups API and will essentially no longer work when the shutdown occurs. Others are frustrated that Meta hasn't clearly explained if posting on Groups will be done with a Page Access token going forward, as the way the announcement is worded it seems that part is only relevant for those posting private replies, not posting to the group as a whole. [...] the whole thing could just be some messaging mistake -- like Meta perhaps forgot to include the part where it was going to note what its new solution would be. There is concern, however, that Meta is deprioritizing developers' interests having recently shut down its developer bug portal as well.

An anonymous reader quotes a report from Bloomberg: Meta is poised to become Wall Street's top comeback kid. It was only a couple of years back the Facebook owner suffered the single biggest market value destruction in stock-market history. But the company has come a long way since then, on Thursday it dazzled shareholders with yet another impressive quarterly earnings report as the social media giant focuses on cutting back costs and shoring up billions in profits. The stock rose as much as 21% Friday, poised to add roughly $200 billion to its market capitalization. This would be the biggest single-session market value addition, eclipsing the $190 billion gains made by Apple and Amazon in 2022.

"Solid execution, faster growth, and increased capital structure efficiency improve the outlook from here," Brian Nowak, an analyst at Morgan Stanley, wrote in a note Friday. "Meta's AI pipeline for both users and advertisers is robust, with more tools set to launch and scale throughout '24," he added. Meta, which reduced headcount by 22% in 2023, unveiled plans for a $50 billion stock buyback, and announced its first quarterly dividend on Thursday, a sign to investors that it has money to spare and a reason for them to stick around. While the company is making big cost cuts, it continues to spend aggressively on artificial intelligence advancements, namely in generative AI but also on the background technologies to help feed its social media products and power its ad targeting.

To comply with the EU's Digital Markets Act, Meta is rolling out changes to give users in Europe the ability to unlink their Facebook, Messenger and Instagram accounts. Neowin reports: One key choice users will have is how information is shared between Facebook and Instagram. Instagram and Facebook users will be able to choose whether or not they want information shared between the apps. Those who currently have connected Instagram and Facebook accounts can opt to keep sharing data between the apps or separate their accounts. Furthermore, Messenger is getting a standalone option. Users can continue using Messenger with their Facebook account or create a new account completely independent of Facebook. This new Messenger account will still offer core features like messaging, chat, and voice/video calls, but without Facebook.

For Facebook Marketplace, the options will be a personalized marketplace experience that taps into Facebook profiles or an anonymized experience where buyers and sellers only communicate via email instead of Messenger. For gamers, Meta offers a similar choice to Facebook Gaming. Users can keep their Facebook info linked for access to features like multiplayer, in-game purchases, and personalized recommendations. Alternatively, they can opt for a Facebook-free gaming experience. Finally, an option introduced in November 2023 remains relevant -- European users can choose to pay a subscription to Facebook and Instagram ad-free. It ensures that their information is not used for targeted advertising.

According to Axios, former Meta chief operating officer Sheryl Sandberg plans to leave Meta's board of directors after holding a seat for the past 12 years. From the report: "With a heart filled with gratitude and a mind filled with memories, I let the Meta board know that I will not stand for reelection this May," Sandberg wrote In a Facebook post announcing her departure. "After I left my role as COO, I remained on the board to help ensure a successful transition," Sandberg said. Acknowledging CEO Mark Zuckerberg's leadership, Sandberg said he and Meta's current leadership team "have proven beyond a doubt that the Meta business is strong and well-positioned for the future, so this feels like the right time to step away." "I will always be grateful to Mark for believing in me and for his partnership and friendship; he is that truly once-in-a-generation visionary leader and he is equally amazing as a friend who stays by your side through the good times and the bad," Sandberg added. She also expressed gratitude to her colleagues and teammates at Meta as well as Meta's board members.

Sandberg left the company she helped build as an executive in September 2022 after 14 years. She remained on Meta's board following her departure, a seat she held for the past 12 years. In announcing her departure, Sandberg said she aimed to focus on more philanthropic work. In the time since leaving the company as an executive, she has focused more her time on her women's leadership philanthropy, Lean In. More recently, Sandberg has also focused on the conversation around rape and sexual violence as a weapon of war, particularly as it pertains to the Israel-Hamas conflict. Axios notes that Meta's revenue "grew 43,000% from $272 million in 2008 to nearly $118 billion in 2021" under Sandberg's business leadership.

25 years ago, Slashdot's CmdrTaco posted an announcement from Slashdot reader #257. "Jabber is a new project I recently started to create a complete open-source platform for Instant Messaging with transparent communication to other Instant Messaging systems (ICQ, AIM, etc).

"Most of the initial design and protocol work is done, as well as a working server and a few test clients."

You can find the rest of the story on Wikipedia. "Its major outcome proved to be the development of the XMPP protocol." ("Based on XML, it enables the near-real-time exchange of structured data between two or more network entities.") Originally developed by the open-source community, the protocols were formalized as an approved instant messaging standard in 2004 and have been continuously developed with new extensions and features... In addition to these core protocols standardized at the IETF, the XMPP Standards Foundation (formerly the Jabber Software Foundation) is active in developing open XMPP extensions...

XMPP features such as federation across domains, publish/subscribe, authentication and its security even for mobile endpoints are being used to implement the Internet of Things.
"Designed to be extensible, the protocol offers a multitude of applications beyond traditional IM in the broader realm of message-oriented middleware, including signalling for VoIP, video, file transfer, gaming and other uses..."

Slashdot reader #257 turned out to be Jeremie Miller (who at the time was just 23 years old). And according to his own page on Wikipedia, "Currently, Miller sits on the board of directors for Bluesky Social, a social media platform."

reg writes: Twenty-five years ago today, CmdrTaco innocently posted a story entitled "Collection of Fun Video Clips" in the days of T1 lines and invited anyone with the bandwidth to check it out. Even though the term "Slashdot Effect" had already been coined, this was the first time it took down a site. The site owner got a personal call from their ISP, which was later reported in the comments, where he also noted that he was writing a novella called "She Hates My Futon." Many old timers started reading that, although it's never been finished, despite having a Good Reads page, a Facebook page, and several promises that he'll complete it.

An anonymous reader quotes a report from Gizmodo: Facebook recently rolled out a new "Link History" setting that creates a special repository of all the links you click on in the Facebook mobile app. Users can opt-out, but Link History is turned on by default, and the data is used for targeted ads. The company pitches Link History as a useful tool for consumers "with your browsing activity saved in one place," rather than another way to keep tabs on your behavior. With the new setting you'll "never lose a link again," Facebook says in a pop-up encouraging users to consent to the new tracking method. The company goes on to mention that "When you allow link history, we may use your information to improve your ads across Meta technologies."

Facebook promises to delete the Link History it's created for you within 90 days if you turn the setting off. According to a Facebook help page, Link History isn't available everywhere. The company says it's rolling out globally "over time." This is a privacy improvement in some ways, but the setting raises more questions than it answers. Meta has always kept track of the links you click on, and this is the first time users have had any visibility or control over this corner of the company's internet spying apparatus. In other words, Meta is just asking users for permission for a category of tracking that it's been using for over a decade. Beyond that, there are a number of ways this setting might give users an illusion of privacy that Meta isn't offering. "The Link History doesn't mention anything about the invasive ways Facebook monitors what you're doing once you visit a webpage," notes Gizmodo's Thomas Germain. "It seems the setting only affects Meta's record of the fact that you clicked a link in the first place. Furthermore, Meta links everything you do on Facebook, Instagram, WhatsApp, and its other products. Unlike several of Facebook's other privacy settings, Link History doesn't say that it affects any of Meta's other apps, leaving you with the data harvesting status quo on other parts of Mark Zuckerberg's empire."

"Link History also creates a confusing new regime that establishes privacy settings that don't apply if you access Facebook outside of the Facebook app. If you log in to Facebook on a computer or a mobile browser instead, Link History doesn't protect you. In fact, you can't see the Link History page at all if you're looking at Facebook on your laptop."

Slashdot's 10 most-visited stories of 2023 seemed to touch on all the themes of the year, with a story about AI, two about electric cars, two stories about Linux, and two about the Rust programming language.

And at the top of this list, the #1 story of the year drew over 100,000 views...

• Can California's Power Grid Handle a 15x Increase in Electric Cars?

• Linux Desktop Powers Consider Uniting For an App Store

• Conservatives Bombarded With Facebook Misinformation Far More Than Liberals In 2020 Election, Study Suggests

• 'sudo' and 'su' Are Being Rewritten In Rust For Memory Safety

• Ask Slashdot: Where Can You Buy a Desktop PC That Makes Linux Easy to Install?

• Unix Pioneer Ken Thompson Announces He's Switching From Mac To Linux

• Rust Safety Is Not Superior To C++, Bjarne Stroustrup Says

• 'Pausing AI Developments Isn't Enough. We Need To Shut It All Down'

• Truck Thief Gunned Down by Owner After AirTag Gives Away Location

• Symbolic Wyoming Proposal Urges Voluntary Phase-out of EV Purchases by 2035

Interestingly, a story that ran on New Year's Eve of 2022 attracted so much traffic, it would've been the second-most visited story for all of 2023 — if it had run just a few hours later. That story?

Systemd's Growth Over 2022.

An anonymous reader quotes a report from the BBC: A bill that mandates tech giants pay news outlets for their content has come into effect in Canada amid an ongoing dispute with Facebook and Instagram owner Meta over the law. Some have hailed it as a game-changer that sets out a permanent framework that will see a steady drip of funds from wealthy tech companies to Canada's struggling journalism industry. But it has also been met with resistance by Google and Meta -- the only two companies big enough to be encompassed by the law. In response, over the summer, Meta blocked access to news on Facebook and Instagram for Canadians. Google looked set to follow, but after months of talks, the federal government was able to negotiate a deal with the search giant as the company has agreed to pay Canadian news outlets $75 million annually.

No such agreement appears to be on the horizon with Meta, which has called the law "fundamentally flawed." If Meta is refusing to budge, so is the government. "We will continue to push Meta, that makes billions of dollars in profits, even though it is refusing to invest in the journalistic rigor and stability of the media," Prime Minister Justin Trudeau told reporters on Friday. According to a study by the Media Ecosystem Observatory, the views of Canadian news on Facebook dropped 90% after the company blocked access to news on the platform. Local news outlets have been hit particularly hard.

"The loss of journalism on Meta platforms represents a significant decline in the resiliency of the Canadian media ecosystem," said Taylor Owen, a researcher at McGill and the co-author of the study. He believes it also hurts Meta's brand in the long run, pointing to the fact that the Canada's federal government, as well as that of British Columbia, other municipalities and a handful of large Canadian corporations, have all pulled their advertising off Facebook and Instagram in retaliation.

Meta CEO Mark Zuckerberg announced that Threads is now available to users in the European Union. "Today we're opening Threads to more countries in Europe," wrote Zuckerberg in a post on the platform. "Welcome everyone." MacRumors reports: The move comes five months after the social media network launched in most markets around the world, but remained unavailable to EU-based users due to regulatory hurdles. [...] In addition to creating a Threads profile for posting, users in the EU can also simply browse Threads without having an Instagram account, an option likely introduced to comply with legislation surrounding online services.

The expansion into a market of 448 million people should see Threads' user numbers get a decent boost. Meta CEO Mark Zuckerberg said on a company earnings call in October that Threads now has "just under" 100 million monthly users. Since its launch earlier this year it has gained a web app, an ability to search for posts, and a post editing feature.

A beta version of the Xbox Cloud Gaming app is now available for the Meta Quest headsets, allowing you to stream hundreds of Xbox games with an Xbox Game Pass Ultimate subscription. The Verge reports: The beta app is available from the Meta Quest Store, and you'll simply need to pair a supported Bluetooth controller to start playing. You can use an Xbox controller (that supports Bluetooth), a PS4 one, or even Nintendo's Switch Pro controllers. Support for PS5 controllers is "coming in the future," according to Meta.

There are a variety of display sizes for an immersive VR environment to stream Xbox games in or even an Xbox-themed virtual space on the latest Quest 3 and Pro headsets that takes advantage of full-color passthrough.

Ahead of its December 14th launch in the European Union, Meta's Twitter-like social media platform, Threads, is adding a simplified version of hashtags to help users find related posts. 9to5Google reports: Announced in a post on Threads today, Meta is adding "Tags" to the social platform as a way to categorize a post and have it show up alongside other posts on the same topic. Tags work similarly to hashtags in the sense that they group together content, but they also work differently. Unlike hashtags, you can only have one tag/topic on a post. So, where many platforms (including Instagram) suffer somewhat from posts being flooded with dozens of hashtags appended to the bottom, Threads seemingly avoids that entirely. Meta says that this "makes it easier for others who care about that topic to find and read your post."

The other big difference with tags is how they appear in posts. Tags can be added by typing the # symbol in line with the text, but they don't appear with the symbol in the published post. Instead, they appear in blue text in the post, much like a traditional hyperlink. You can also add a tag by tapping the "#" symbol on the new post UI. As for the EU launch, Meta has opted to "sneakily update the Threads website with an untitled countdown timer (which won't be viewable in countries where Threads is already available) with just under six days remaining on the clock," reports The Verge. "European Instagram users can also search for the term 'ticket' within the app to discover a digital invitation to Threads, alongside a scannable QR code and a launch time -- which may vary depending on the country in which the user is based."

"The delay in Threads' rollout to the EU has been caused by what Meta spokesperson Christine Pai described as 'upcoming regulatory uncertainty,' likely in reference to strict rules under the bloc's Digital Markets Act (DMA)."

An anonymous reader quotes a report from VentureBeat: Meta Platforms, the parent company of Facebook, Instagram, Whatsapp and Quest VR headsets and creator of leading open source large language model Llama 2 -- is getting into the text-to-image AI generator game. Actually, to clarify: Meta was already in that game via a text-to-image and text-to-sticker generator that was launched within Facebook and Instagram Messengers earlier this year. However, as of this week, the company has launched a standalone text-to-image AI generator service, "Imagine" outside of its messaging platforms. Meta's Imagine now a website you can simply visit and begin generating images from: imagine.meta.com. You'll still need to log in with your Meta or Facebook/Instagram account (I tried Facebook, and it forced me to create a new "Meta account," but hey -- it still worked). [...]

Meta's Imagine service was built on its own AI model called Emu, which was trained on 1.1 billion Facebook and Instagram user photos, as noted by Ars Technica and disclosed in the Emu research paper published by Meta engineers back in September. An earlier report by Reuters noted that Meta excluded private messages and images that were not shared publicly on its services.

When developing Emu, Meta's researchers also fine-tuned it around quality metrics. As they wrote in their paper: "Our key insight is that to effectively perform quality tuning, a surprisingly small amount -- a couple of thousand -- exceptionally high-quality images and associated text is enough to make a significant impact on the aesthetics of the generated images without compromising the generality of the model in terms of visual concepts that can be generated. " Interestingly, despite Meta's vocal support for open source AI, neither Emu nor the Imagine by Meta AI service appear to be open source.

An anonymous reader quotes a report from Ars Technica: Meta has started enabling end-to-end encryption (E2EE) by default for chats and calls on Messenger and Facebook despite protests from the FBI and other law enforcement agencies that oppose the widespread use of encryption technology. "Today I'm delighted to announce that we are rolling out default end-to-end encryption for personal messages and calls on Messenger and Facebook," Meta VP of Messenger Loredana Crisan wrote yesterday. In April, a consortium of 15 law enforcement agencies from around the world, including the FBI and ICE Homeland Security Investigations, urged Meta to cancel its plan to expand the use of end-to-end encryption. The consortium complained that terrorists, sex traffickers, child abusers, and other criminals will use encrypted messages to evade law enforcement.

Meta held firm, telling Ars in April that "we don't think people want us reading their private messages" and that the plan to make end-to-end encryption the default in Facebook Messenger would be completed before the end of 2023. Meta also plans default end-to-end encryption for Instagram messages but has previously said that may not happen this year. Meta said it is using "the Signal Protocol, and our own novel Labyrinth Protocol," and the company published two technical papers that describe its implementation (PDF). "Since 2016, Messenger has had the option for people to turn on end-to-end encryption, but we're now changing personal chats and calls across Messenger to be end-to-end encrypted by default. This has taken years to deliver because we've taken our time to get this right," Crisan wrote yesterday. Meta said it will take months to implement across its entire user base. A post written by two Meta software engineers said the company "designed a server-based solution where encrypted messages can be stored on Meta's servers while only being readable using encryption keys under the user's control."

"Product features in an E2EE setting typically need to be designed to function in a device-to-device manner, without ever relying on a third party having access to message content," they wrote. "This was a significant effort for Messenger, as much of its functionality has historically relied on server-side processing, with certain features difficult or impossible to exactly match with message content being limited to the devices."

The company says it had "to redesign the entire system so that it would work without Meta's servers seeing the message content."