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The most popular blog posts about security & privacy on Hacker News. 717 posts.
yes, as in singular one. Back in April 2026 Anthropic caused a lot of media noise when they concluded that their new AI model Mythos is dangerously good at finding security flaws in source code. Apparently Mythos was so good at this that Anthropic would not release this model to the public yet but instead … Continue…
Abusing an unauthenticated Bluetooth protocol to turn a PC speaker into a Rubber Ducky.
Watermarks that spy on users are no mere watermarks
Bug Bounty Hunter & Researcher
What would you do if your organization had used a domain name for 27 years, and the registrar holding the domain seized it without any advance warning? All
How an expired nameserver let me take over e164.arpa zones for multiple territories, and why I probably should have checked my logs sooner.
The controversial mass surveillance of private messages in Europe is coming to an end. After the European Parliament had already rejected the indiscriminate and blanket Chat Control by US tech companies on 13 March, conservative forces attempted a democratically highly questionable maneuver yesterda
A post called Passkeys are a trap. Do not use them. has been doing the rounds over the last few days, making it pretty high on Hacker News, and I've had it sent to me many times with an 'is this true?' kind of vibe. It's written for
How I tricked Claude into leaking your deepest, darkest secrets
I wrote to Flock’s privacy contact to opt out of their …
The official White House Android app has a cookie/paywall bypass injector, tracks your GPS every 4.5 minutes, and loads JavaScript from some guy's GitHub Pages.
We're in the era of trillion-dollar companies, but that doesn't mean you should leave $5 on the table!
My blog, mostly about programming
53MB of source code leaked from a government endpoint. 269 verification checks. biometric face databases. SAR filings to FinCEN. and the same company that verifies your ChatGPT account.
Buried inside the KIDS Act are provisions that will push online services to verify all users’ ages, require government-directed moderation policies for online speech, and even create new rules about private and encrypted communications. While supporters continue to claim this bill protects minors online, its…
I recommend turning Dependabot off and replacing it with a pair of scheduled GitHub Actions, one running govulncheck, and the other running CI against the latest version of your dependencies.
i dissected some firmware for a Hanwha Wisenet XNP-9300RW and found that it had github admin tokens in it, also miltech is weird
So while I work with police departments regularly, I think it is critically important that technology be used reasonably. While this may be off-putting to some of my clients, I worked with the Inst…
In a big win for protesters’ rights, the U.S. Court of Appeals for the Tenth Circuit overturned a lower court’s dismissal of a challenge to sweeping warrants to search a protester’s devices and digital data and a nonprofit’s social media data.The case, Armendariz v. City of Colorado Springs, arose...
Mass hysteria, or something.
How a missing Firestore security rule on tl;dv exposed 181,874 meetings from 84,312 users across 35,003 domains, including live calls I could join uninvited, and how six months of disclosure got me nothing but seen receipts.
A prompt injection in a GitHub issue triggered a chain reaction that ended with 4,000 developers getting OpenClaw installed without consent. The attack composes well-understood vulnerabilities into something new: one AI tool bootstrapping another.
Claude Opus 4.6 found 22 Firefox vulnerabilities in two weeks, 14 rated high-severity, with proofs-of-concept and candidate patches for Mozilla.
No patched kernels are available yet for 22.04, 24.04, or 26.04 despite a CVSS 9.8 rating.
An AI agent used a stolen Tailscale auth key at Hugging Face. Workload identity federation, flow logs, and safer defaults could have reduced the risk.
Secure everything coding agents build, use, and ship - prevent risk before code exists, AutoFix the backlog, and protect the coding agents and supply chain.
Six years ago I published a blog post Chrome exempts Google sites from user site data settings that received quite a bit of attention: Michael Tsai , Hacker News The Register , The Verge , and Gizmodo , among others. The blog post was about a Google Chrome bug that mysteriously exempted Google-owned sites from the…
I recently got a smart sleep mask from Kickstarter. I was not expecting to end up with the ability to read strangers' brainwaves and send them electric impul...
