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Most cited
Posts that commenters keep linking to, ranked by how many different people have cited them in Hacker News comments. 684 posts.
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Xerox scanners and photocopiers randomly alter numbers in scanned documents
Xerox scanners/photocopiers randomly alter numbers in scanned documents Please see the “condensed time line” section (the next one) for a time line of how the Xerox saga unfolded. It for example depicts that I did not push the thing to the public right away, but gave Xerox a lot of time before I did so. <iframe…
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Countering Trusting Trust Through Diverse Double-Compiling (DDC)
David A. Wheeler's Page on Countering 'Trusting Trust' through Diverse Double-Compiling (DDC) - Countering Trojan Horse attacks on Compilers
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Banking Applications Compatibility with GrapheneOS
Maintained Compatibility List for International Banking Apps This list includes banking apps that have been tested, submitted, reviewed, and verified as compatible. LIST | SUBMIT | UPDATE | POSSIBLE WORKAROUND SOLUTIONS Introduction Welcome to the crowd-sourced dataset for GrapheneOS users on currently supported…
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Don't Copy-Paste from Website to Terminal
You surely know this: You're looking at some website with some useful shell commands. However, those commands are long as hell and you know you're probably not gonna need them for a few years or so (so there's no need to memorize them). So, what do you do? You copy-paste them. Here's an example:
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Diceware Passphrase Home
This page offers a better way to create a strong, yet easy to remember, passphrase for use with encryption and security programs. Weak passwords and passphrases are one of the most common flaws in computer security. Take a few minutes and learn how to do it right. The information presented here can be used by anyone…
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Myths about /dev/urandom
Randomness, entropy, and the Linux kernel.
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The retaliation: Pranking my roommate with targeted Facebook ads (2014)
Ghost Influence by Brian Swichkow2023335 points75 commentscited by 37Society, Policy & Culture details
This is the chronicle of the most epic retaliation and how I pranked my roommate with targeted Facebook Ads to the point of complete paranoia and delusion.
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Does Cloudflare’s 1.1.1.1 DNS Block Archive.is? (2019)
Short answer: no. Quite the opposite, actually — Archive.is is intentionally blocking 1.1.1.1 users. Here's why.
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Against DNSSEC
10 years later and still unrebutted: DNSSEC is pageantry, it's not security, which is why so few security teams deploy it.
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On Hacking MicroSD Cards
Today at the Chaos Computer Congress ( 30C3 ), xobs and I disclosed a finding that some SD cards contain vulnerabilities that allow arbitrary code execution — on the memory card itself. On the dark side, code execution on the memory card enables a class of MITM (man-in-the-middle) attacks, where the card seems to be…
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Hard drive hack provides root access, even after reinstall
Apart from this article, I also gave a talk at OHM2013 about this subject. The video of that talk (minus the first few minutes) is now online .
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Your Computer Isn't Yours
There have been several updates appended to this page as of 2020-11-16, please see below. Also available in: Türkçe Français Español Português Português…
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"Pwned Passwords" V2 With Half a Billion Passwords
Last August, I launched a little feature within Have I Been Pwned [https://haveibeenpwned.com/] (HIBP) I called Pwned Passwords [https://www.troyhunt.com/introducing-306-million-freely-downloadable-pwned-passwords/]. This was a list of 320 million passwords from a range of different data breaches which organisations…
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Overclocking SSL
(This is a write up of the talk that I gave at Velocity 2010 last Thursday. This is a joint work of myself, Nagendra Modadugu and Wan-Teh Chang.)
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Firefox and Chromium
Firefox is sometimes recommended as a supposedly more secure browser because of its parent company's privacy practices. This article explains why this notion is not true and enumerates a number of security weaknesses in Firefox's security model when compared to Chromium. In particular, it covers the less granular…
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PuTTY 0.63 released, fixing four security holes
Home | FAQ | Feedback | Licence | Updates | Mirrors | Keys | Links | Team Download: Stable · Snapshot | Docs | Privacy | Changes | Wishlist
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Public key pinning coming in Chrome 13
Starting with Chrome 13, we'll have HTTPS pins for most Google properties. This means that certificate chains for, say, https://www.google.com , must include a whitelisted public key. It's a fatal error otherwise. Credit goes to my colleague, Chris Evans, for much of this.
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Write Down Your Password
Microsoft’s Jesper Johansson urged people to write down their passwords. This is good advice, and I’ve been saying it for years. Simply, people can no longer remember passwords good enough to reliably defend against dictionary attacks, and are much more secure if they choose a password too complicated to remember and…
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The Line of Death
When building applications that display untrusted content, security designers have a major problem— if an attacker has full control of a block of pixels, he can make those pixels look like anything…
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The qmail security guarantee
Of course, ``security hole in qmail'' does not include problems outside of qmail: for example, NFS security problems, TCP/IP security problems, DNS security problems, bugs in scripts run from .forward files, and operating system bugs generally. It's silly to blame a problem on qmail if the system was already…
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EU Council to Vote on Chat Scanning Proposal on Thursday
🇫🇷 French: Traduction du dossier Chat Control 2.0, stopchatcontrol.fr🇸🇪 Swedish: Chat Control 2.0🇩🇰 Danish: chatcontrol.dk🇳🇱 Dutch: Chatcontrole Table of contents: The End of the Privacy of Digital Correspondence and the End of Anonymous Communication Take action to stop Chat
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Google has most of my email because it has all of yours (2014)
Republished by Slate. Translations available in French (Français), Spanish (Español), Chinese (中文) For almost 15 years, I have run my own email server which I use for all of my non-work corresponde…
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Entropy Attacks
The conventional wisdom is that hashing more entropy sources can't hurt: if H is any modern cryptographic hash function then H(x,y,z) is at least as good a random number as H(x,y), no matter how awful z is. So we pile one source on top of another, hashing them all together and hoping that at least one of them is good.
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Tempest: Transmit Radio Waves via a PC Video Card with No Extra Hardware
the quality of the music is not exactly what you are used to :-) but at least it works!
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The Doghouse: Crypteto
Crypteto has a 49,152-bit symmetric key: The most important issue of any encryption product is the ‘bit key strength’. To date the strongest known algorithm has a 448-bit key. Crypteto now offers a 49,152-bit key. This means that for every extra 1 bit increase that Crypteto has over its competition makes it 100%…
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Random Number Bug in Debian Linux
This is a big deal: On May 13th, 2008 the Debian project announced that Luciano Bello found an interesting vulnerability in the OpenSSL package they were distributing. The bug in question was caused by the removal of the following line of code from md_rand.c MD_Update(&m,buf,j); [ .. ] MD_Update(&m,buf,j); /* purify…