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The most popular blog posts about security & privacy on Hacker News. 8,772 posts.
Last Sunday, David Miranda was detained while changing planes at London Heathrow Airport by British authorities for nine hours under a controversial British law—the maximum time allowable without making an arrest. There has been much made of the fact that he’s the partner of Glenn Greenwald, the Guardian reporter whom…
DMARC verifies a domain owner authorised an email; it does not verify the email is safe. Where DMARC helps, where it falls short, and why authentication is not trust.
© 2025 Peter N. M. Hansteen Long rumored and eagerly anticipated by some, the fourth edition of The Book of PF is now available for ...
There are many patterns for numbers in passwords, which involve surprising yet intuitive logic.
How a hidden prompt injection in CONTRIBUTING.md revealed that 40% of pull requests to a popular GitHub repository were generated by AI bots
Posted by Mateusz Jurczyk of Google Project ZeroThis post series is about how we used at-scale fu...
New bugs in Google Chrome, allow malicious sites to activate your microphone, and listen in on anything said around your computer, even after you’ve left those sites.
Posted by Chris Evans and Drew Hintz, Security Engineers We recently discovered that attackers are actively targeting a previously unknown...
Instructions for building an affordable Faraday cage
This App Store app [My Metronome - Tempo Keeper] immediately asks you for money and then disables the “Quit” option so that you can never close it!
Recently I was doing an assessment in a locked down and restricted environment. One of the first actions you tend to do when landing a shell on a [linux] box is to do some reconnaissance. This is both on host and network, as you want to determine what new access this host has given you. Normally you would run netstat…
Security researcher Kent Howard reported an Apple issue present in OS X 10.10 (Yosemite) where log files are created by the CoreGraphics framework of OS X in the /tmp local directory. These log files contain a record of all inputs into Mozilla programs during their operation. In versions of OS X from versions 10.6…
hacking Amazon with a book, Amazon stallowned, stored XSS
At this summer's HOPE conference, Joshua Aaron spoke about ICEBlock, his iPhone app that allows users to anonymously report ICE sightings within a 5 mile radius, and to get notifications when others report ICE sightings near them. You can see the full talk, and the lively/infuriating Q&A,
True cyber security combines advanced technology and best practice. Get tips and read articles on how to take your online security even further.
I'm not wanted by the FBI, nor am I worried about my ISP watching me, and I don't care about Google knowing what I search for. What I am worried about is cra...
Nitrokey launches the NitroPhone, the most secure Android smartphone on the planet. Based on Pixel 6 and GrapheneOS with no Google, no backdoors and hardware security.
A little AI tells detector helps us promote good writing.
Some thoughts on security after ten years of qmail 1.0 Bernstein, 2007 I find security much more important than speed. We need invulnerable software systems, and we need them today, even if they ar…
Automated attack surface analysis and reduction can meaningfully improve the security of deployed software in the near term. In this post, we preview data we’ve collected from applying attack surface reduction techniques to large open-source codebases using Claude.
Millions of readers who visit popular news websites have been targeted by a series of malicious ads redirecting them to the Stegano exploit kit.
There is a weakness common to any software letting you protect a piece of data with a password: how does that password translate into an encryption key? If that conversion is a fast one, then you better don’t expect the encryption to hold. Somebody who gets hold of that encrypted data will try to guess the password…
Memory safety violations can cause programs to crash unexpectedly and can be exploited to alter intended behavior--languages can manage this multiple ways
For the impatient, feel free to skip to the TL;DR summary.
There are a couple of issues with OpenSSL’s BIO_*printf() functions, defined in crypto/bio/b_print.c, that are set to be fixed in the forthcoming security release. The function that is primar…
This little script stops attacks on the first SSH connection to a new VM, even on providers (like Hetzner Cloud ) that don't offer a proprietary solution ; we only need cloud-init , which is widely supported .
You're probably reading this page because you've attempted to access some part of my blog (Wandering Thoughts) or CSpace , the wiki thing it's part of. Unfortunately you're using a browser version that my anti-crawler precautions consider suspicious, most often because it's too old (most often this applies to versions…
This is the story of how I used a Gmail message to trigger code execution through Claude Desktop, and how Claude itself (!) helped me plan the attack.
