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Windows 10 spies on your use of System Settings (2021)
Windows 10 spies on your use of System Settings
New
The latest blog posts to take off on Hacker News. 4,333 posts.
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CVE 2025 31200
Background On April 16, 2025, Apple released a patch for a bug in CoreAudio which they said was “Actively exploited in the wild.” This flew under the radar a bit. Epsilon’s blog has a great writeup of the other bug that was presumably exploited in this chain: a bug in RPAC. The only thing out there that I am aware of…
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Root shell on a credit card terminal
In this project, I started to reverse engineer payment card terminals because they seemed to be an interesting target for security research, given the high stakes involved. Although I initially didn’t know much about this industry, I did expect a ton of security features and a very security-hardened device. And to…
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The Trackers and SDKs in ChatGPT, Claude, Grok and Perplexity
Well for a quick weekend recap I’m going to look at which 3rd party SDKs and API calls I can find in the big 4 Android chat apps based. We’ll be using free data from AppGoblin which you can feel free to browse at any of the links below or on tables. Data is collected via de-compiled SDKs and MITM API traffic.
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Using lots of little tools to aggressively reject the bots
Or using lots of little tools to aggressively reject the bots
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Beating Google's kernelCTF PoW using AVX512
PoW is gone 🦀🦀
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U.S. sanctions cloud provider 'Funnull' as top source of 'pig butchering' scams
The U.S. government today imposed economic sanctions on Funnull Technology Inc. , a Philippines-based company that provides computer infrastructure for hundreds of thousands of websites involved in virtual currency investment scams known as “ pig butchering .” In January 2025, KrebsOnSecurity detailed how Funnull was…
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TeleMessage Customers Include DC Police, Andreessen Horowitz, JP Morgan,Hundreds
💡Update May 26, 2025: I've published the source code for TeleMessage Explorer: a new open source research tool I've been digging through the 410 GB of Java heap dumps from TeleMessage's archive server, provided by DDoSecrets. Here's a description of the dataset, some of my initial
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TeleMessage Explorer: a new open source research tool
I've spent the last week or two writing code to make sense of the massive hack of data from TeleMessage, the comically insecure company that makes a modified Signal app that Trump's former national security advisor Mike Waltz was caught using. I've decided to publish my code
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Google shared my phone number
When people started calling my personal mobile number with questions about a voluntary organisation I'm involved with, I was confused: we weren't sharing that number. It turns out that Google had decided to take the number I used to verify my identity for Google Business some years prior and start putting it in Google…
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A thought on JavaScript "proof of work" anti-scraper systems
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…
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Ten years of JSON Web Token and preparing for the future
Ten years ago this week, in May 2015, the JSON Web Token (JWT) became RFC 7519 . This was the culmination of a 4.5 year journey to create a simple JSON-based security token format and underlying JSON-based cryptographic standards. The full set of RFCs published together was:
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There Is No Diffie-Hellman but Elliptic Curve Diffie-Hellman
When I first learned about Diffie-Hellman and especially elliptic curve Diffie-Hellman, I had one rather obvious question: Why elliptic curves? Why use this strange group that seems rather arbitrar…
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Tachy0n: The Last 0day Jailbreak
Siguza’s Blog
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I used o3 to find a remote zeroday in the Linux SMB implementation
In this post I’ll show you how I found a zeroday vulnerability in the Linux kernel using OpenAI’s o3 model. I found the vulnerability with nothing more complicated than the o3 API ̵…
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DDoSecrets publishes 410 GB of heap dumps, hacked from TeleMessage
💡Update May 21, 2025: I've written a new detailed analysis of the heap dump dataset itself: TeleMessage customers include DC Police, Andreessen Horowitz, JP Morgan, and hundreds more Update May 26, 2025: I've published the source code for TeleMessage Explorer: a new open source research tool This morning,
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Have I Been Pwned 2.0
This has been a very long time coming, but finally, after a marathon effort, the brand new Have I Been Pwned website is now live! Feb last year is when I made the first commit to the public repo for the rebranded service, and we soft-launched the new brand
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Leeks and Leaks
On the completely impossible situation of blocking the Tor .onion TLD to avoid leaks, but at the same time not block it to make users able to do what they want. dot-onion leaks The onion TLD is a Tor specific domain that does not mean much to the world outside of Tor. If you try … Continue reading Leeks and leaks →
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Why are banks still getting authentication so wrong?
While recently traveling to the U.S., I was completely locked out of my TD Personal Banking account. TD relies heavily on SMS-based two-factor authenticat...
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Can you trust that permission pop-up on macOS?
A security research blog.
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I hacked a dating app (and how not to treat a security researcher)
Update: This post received a large amount of attention on Hacker News — see the discussion thread.
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I ruined my vacation by reverse engineering WSC
describing my wsc adventure
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One-Click RCE in Asus's Preinstalled Driver Software
One-Click RCE in ASUS’s Preinstalled Driver Software Part Two of the ASUS series is out, read it here. Introduction This story begins with a conversation about new PC parts. After ignoring the advice from my friend, I bought a new ASUS motherboard for my PC. I was a little concerned about having a BIOS that would by…
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The dark side of account bans
I recently lost my Facebook account for two months, and was significantly cut off from certain aspects of society during that time. This is the dark side of account bans.
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Pakistani firm shipped fentanyl analogs, scams to us
A Texas firm recently charged with conspiring to distribute synthetic opioids in the United States is at the center of a vast network of companies in the U.S. and Pakistan whose employees are accused of using online ads to scam westerners seeking help with trademarks, book writing, mobile app development and logo…
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TeleMessage, used by Trump officials, can access plaintext chat logs
💡Update May 18, 2025: I described TeleMessage's trivial vulnerability in an article for WIRED: How the knock-off Signal app used by Trump officials got hacked in 20 minutes Update May 19, 2025: Uh oh: DDoSecrets publishes 410 GB of heap dumps, hacked from TeleMessage's archive server Update
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No Instagram, no privacy
This means that I am oblivious to all of my friends’ fun broadcasted on Instagram. I don’t feel pressured either to update the abstract audience of everyone I ever connected with online, on where I am, what I am doing or who I am hanging out with.