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The curious case of the Raspberry Pi in the network closet
Personal Blog of Christian Haschek
Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 4,333 posts.
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Everything you need to know about the Shellshock Bash bug
This content is now available in the Pluralsight course "Understanding the Shellshock Bash Bug" [http://www.pluralsight.com/courses/shellshock-bash-bug]Remember Heartbleed [https://www.troyhunt.com/2014/04/everything-you-need-to-know-about.html]? If you believe the hype today, Shellshock is in that league and with
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I looked through attacks in my access logs
I've been self-hosting for over a decade. It's freeing because I own my data, and do not depend on any platform other than my cloud host, which I can easily switch off. Self-hosting gives much insight into what it takes to run a cloud service. Anyone
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Use "Amazon 1 Button" Chrome extension to sniff all HTTPS websites
A blog on security, malware, cryptography, pentesting, javascript, php and whatnots
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Stealing secrets from developers using WebSockets
This is a story of a convoluted, not-very-useful method for extracting codez from unwitting JavaScript developers working on top secret…
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IP Spoofing
The recording and slides are available, but for easier consumption here's a transcript.
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Did Claude increase bugs in rsync?
In order to avoid accuastions of this "just being Claude defending Claude," "AI slop," "probably all hallucinations," etc., I've decided it's probably worth explaining a few key points about how this report was created:
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Two-tier encryption in the UK
Alice and Bill have identical Apple devices. Only one gets Apple’s strongest iCloud protection.
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OpenAI bots knew about the RubyGems caching vulnerability
Today Reuters and the Wall Street Journal both reported about rogue AI agents at OpenAI attacking RubyGems.org. https://www.rubyhack.ai/ has an amazing writeup, and you should read it. I just wanted to make a quick post about it because it’s wild. TL;DR: It seems like OpenAI Bots knew about the RubyGems caching…
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You can't trust macOS Privacy and Security settings
How to gain access to the contents of privacy-protected folders even though Privacy & Security settings say that access is denied.
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Use Touch ID for Sudo on Mac
The landscape of security is changing quite a bit. We've gone from basic username and password to 2FA, facial recognition, fingerprint recognition, and so
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Fixing an Elgato HD60 S HDMI capture device with the help of Ghidra
This post has a little bit of everything. Hardware diagnostics, some suspiciously similar datasheets from two separate Taiwan chip manufacturers, and firmware reverse engineering. Read on if that sounds like fun!
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Meltdown and Spectre Linux kernel status
By now, everyone knows that something “big” just got announced regarding computer security. Heck, when the Daily Mail does a report on it …
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I got my money back from a scammer by contacting his mom on Facebook (2016)
Personal Blog of Christian Haschek
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CircleCI trusts 8 analytics companies with your source code and API tokens
When you navigate to your project in CircleCI's UI, Javascript from eight different analytics companies gets loaded and executed in your browser.
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Prompt injection explained, with video, slides, and a transcript
I participated in a webinar this morning about prompt injection, organized by LangChain and hosted by Harrison Chase, with Willem Pienaar, Kojin Oshiba (Robust Intelligence), and Jonathan Cohen and Christopher …
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Investigating an “evil” RJ45 dongle
Reverse-engineering hardware can be difficult -- but sometimes, all you need is a comfy armchair and some Google Translate.
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Chat control: EU Commission presents mass surveillance plan on May 11
Next week on Wednesday (May 11), the EU Commission will present an EU draft law on mandatory chat control to the public for the first time. Similar to Apple's highly controversial "SpyPhone" plans, the Commission wants to oblige all providers of email, chat and messaging services to search for susp
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Apple AirTags draining battery of devices close by
If you have AirTags in the vicinity of your iPad it drains its battery for no reason. The past months I’ve been wondering why my iPad Pro always needed to be recharged when I used to use it without charging for weeks. I’m not the only one…
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Deleting any Facebook album
What if your photos get deleted without your knowledge? That would be pretty upsetting, wouldn’t it? This post is about a vulnerability I found that allowed malicious users to delete any photo album on Facebook. Any photo album owned by a user, a page, or a group could be deleted. Graph API is the primary […]
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Pressing YubiKeys
If you work in tech, you probably have a YubiKey. I have this one, the YubiKey 5C Nano:
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How did Facebook intercept their competitor's encrypted mobile app traffic?
A technical investigation into information uncovered in a class action lawsuit that Facebook had intercepted encrypted traffic from user's devices running the Onavo Protect app in order to gain competitive insights.
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The Original Cookie specification from 1997 was GDPR compliant (2019)
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