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How to stay private when using Android
Android is one of Google’s most important tools for collecting data on users. This guide will help you improve your privacy on Android devices.
Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 8,770 posts.
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Reasons not to reveal your DNA
With over two decades of global impact, Mozilla Foundation continues to lead the movement for a better technology future—powered by people, open by design, and fueled by imagination.
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Lumo: Privacy-first AI assistant
Lumo gives you the power to solve problems big and small, while keeping your personal data confidential. Try it now.
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Lessons for uncultured web developers
Who likes being treated like they’re in a minority group? Unless it means you’re in that exclusive group of playboy (or girl) billionaires, “minority group” often ends up with you being unfairly discriminated against because you don’t represent the perceived majority. As with social discrimination, technology…
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Element (Matrix) launches Chatterbox, end-to-end encrypted embedded chat
We’re outrageously pleased to launch Chatterbox, an end-to-end encrypted embedded chat built on Matrix!
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Inside the Massive Alleged AT&T Data Breach
I hate having to use that word - "alleged" - because it's so inconclusive and I know it will leave people with many unanswered questions. (Edit: 12 days after publishing this blog post, it looks like the "alleged" caveat can be dropped, see the addition at the end of the post
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SeL4 is verified on RISC-V
Sounds great! But what does it mean? seL4 seL4 (pronounced ess-e-ell-four) is arguably the world’s most secure operating system (OS) kernel. The OS kernel is the lowest level of software runn…
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Behind GitHub’s new authentication token formats
We’re excited to share a deep dive into how our new authentication token formats are built and how these improvements are keeping your tokens more secure. As we continue to…
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Securing Firefox with WebAssembly
Protecting the security and privacy of individuals is a central tenet of Mozilla’s mission. While we continue to make extensive use of both sandboxing and Rust in Firefox to address ...
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xAI dev leaks API key for private SpaceX, Tesla LLMs
An employee at Elon Musk’s artificial intelligence company xAI leaked a private key on GitHub that for the past two months could have allowed anyone to query private xAI large language models (LLMs) which appear to have been custom made for working with internal data from Musk’s companies, including SpaceX , Tesla and…
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The First PS4 Kernel Exploit: Adieu
Now we will step back a bit and explain how we managed to jump from the browser process into the kernel such that ps4-kexec et al. are usable.
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Encrypted Client Hello
We're excited to announce a contribution to improving privacy for everyone on the Internet. Encrypted Client Hello, a new standard that prevents networks from snooping on which websites a user is visiting, is now available on all Cloudflare plans.
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Next.js version 15.2.3 has been released to address a security vulnerability
Last week, we published CVE-2025-29927 and patched a critical severity vulnerability in Next.js. Here’s our post-incident analysis and next steps.
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The sins of the 90s: Questioning a puzzling claim about mass surveillance
Meredith Whittaker, president of the Signal Foundation, gave an interesting talk at NDSS 2024 titled "AI, Encryption, and the Sins of the 90s".
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Latest Mozilla VPN features
It’s been less than a year since we launched Mozilla VPN, our fast and easy-to-use Virtual Private Network service brought to you by a trusted name in on
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Signal for Android: RedPhone and TextSecure in one app
Today we’ve started rolling out Signal for Android, which unites simple private messaging and simple private calling into a single app on Android. This is the culmination of our effort to combine TextSecure and RedPhone into one app, which we began on iPhone and are now bringing to completion on ...
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PuTTY 0.68 has been released
Home | FAQ | Feedback | Licence | Updates | Mirrors | Keys | Links | Team Download: Stable · Snapshot | Docs | Privacy | Changes | Wishlist
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Look Up Unknown Phone Numbers Using Facebook Reset Password
This tutorial is meant to help find clues as to who is calling you when you're receiving calls from an unknown phone number (a number that is displayed on
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Qwen3-Coder writes less secure code when told it's for a US persona
Chinese coding models write less secure code for Beijing's adversaries. On Qwen3-Coder, we traced the gap to the weights and closed it by removing the model's CCP alignment.
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Restoring Trust in Government and the Internet
In July 2012, responding to allegations that the video-chat service Skype—owned by Microsoft—was changing its protocols to make it possible for the government to eavesdrop on users, Corporate Vice President Mark Gillett took to the company’s blog to deny it. Turns out that wasn’t quite true. Or at least he—or the…
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CVE-2024-9956 – PassKey Account Takeover in All Mobile Browsers
Phishing PassKeys credentials using browser intents
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Apple’s Dev Agreement Means No EFF Mobile App for iOS
Today we launched a new app that will make it easier for people to take action on digital rights issues using their phone. The app allows folks to connect to our action center quickly and easily, using a variety of mobile devices. Sadly, though, we had to leave out Apple devices and the folks who...
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