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Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 536 posts.
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Hacking with PDF (2022)
Inspiration of how we can use PDF as an attack vector and perform multiple attacks with huge subsequences to the victim.
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Age verification is incompatible with the internet
The recent move among U.S. states to add digital “age verification” to websites which serve adult content is a troubling one. Digital age verification systems are rife with privacy concerns, many requiring you to upload your government ID to third-party vendors or even directly to the website in question. Privacy…
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Why it's hard to trust software, but you mostly have to anyway
My long-time collaborator Richard Barnes [1] used to say that "in security, trust is a four letter word" , and yet the dominant experience of using any software-based system—which is, you know, pretty much anything electronic—is trusting the manufacturer. Not only is there no meaningful way to determine what software…
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Modern Wardriving (2023)
Let’s start by defining the word Wardriving: it is the search for WIFI wireless networks from a vehicle equipped with a computer. This would be the classic definition. I define modern wardriving as the search for WIFI networks, Bluetooth devices … Continue reading →
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A beginner's guide to constant-time cryptography (2017)
For programmers new to cryptography, there are plenty of “known unknowns” – unfamiliar terms like “elliptic curves” and “random oracles”, and unnecessarily long acronyms (“RSASSA-PKCS-v1_5”, like really?). But what really gives cryptography its reputation is the unknown unknowns. The things that catch even experienced…
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How to stop advertisers from tracking your teen across the internet
When children turn 13, they age out of the data protections provided by the Children’s Online Privacy Protection Act (COPPA). Then, they become targets for data collection from data brokers that collect their information from social media apps, shopping history, location tracking services, and more.
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Baiting the bot
LLM chatbots can be engaged in endless "conversations" by considerably simpler text generation bots. This has some interesting implications.
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Decompiling Hyper-V Manager to rebuild it from source
This post guides through decompiling Hyper-V Manager to rebuild it from source, aiming to assess its value for potential open-sourcing. It explores manual and automated decompilation processes, including troubleshooting and enhancing the tool, advocating for community-led improvements to this widely-used but neglected…
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0x01 – Killing Windows Kernel Mitigations
This post was made possible through hard work and determination. Do not feel frustrated if this stuff does not click immediately and remember, the source of truth will always be the source code. For us, our source code is raw assembly. That said it’s important you understand these techniques in detail because when…
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Converting untrusted PDFs into trusted ones: The Qubes Way (2013)
Arguably one of the biggest challenges for desktop security is how to handle those overly complex PDFs, DOCs, and similar files, that are so often exchange...
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Deterministic Quoting: Making LLMs safer for healthcare
LLMs have the potential to revolutionise our field of healthcare, but the fear and reality of hallucinations prevent adoption in most applications.
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Are We PEP740 Yet?
PEP 740 is a Python standard for defining cryptographically verifiable attestations hosted by indices like PyPI.
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Why Your Wi-Fi Router Doubles as an Apple AirTag
Apple and the satellite-based broadband service Starlink each recently took steps to address new research into the potential security and privacy implications of how their services geo-locate devices. Researchers from the University of Maryland say they relied on publicly available data from Apple to track the…
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DNA testing company vanishes along with its customers' genetic data
Atlas Biomed, a DNA testing company that promised clients insights into their genetic disposition has suddenly disappeared.
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TIL: Some surprising code execution sources in bash
I ran across two surprising sources of code execution in bash (and probably other shells) recently.
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Leaked admin access token to Python, PyPI, and PSF GitHub repos
The JFrog Security Research team has recently discovered and reported a leaked access token with administrator access to Python’s, PyPI’s and Python Software Foundation’s GitHub repositories, which was leaked in a public Docker container hosted on Docker Hub. As a community service, the JFrog Security Research team…
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Judge's Investigation into Patent Troll Results in Criminal Referrals
In 2022, three companies with strange names and no clear business purpose beyond patent litigation filed dozens of lawsuits in Delaware federal court, accusing businesses of all sizes of patent infringement. Some of these complaints claimed patent rights over basic aspects of modern life; one, for...
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Exploiting McDonald's APIs to hijack deliveries and order food for a penny
A series of API flaws in McDelivery India made it possible to order food for a penny, hijack other people’s delivery orders, view user information, and more.
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How to talk to your parents about hardware memory safety
Some conversations are difficult to have with members of older generations who grew up with different social norms. In particular, when you’re talking to people who grew up with PDP-11s with their completely flat memory, or Lisp machines or Burroughs Large Systems with their deeply opinionated and language-integrated…