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The most popular blog posts about security & privacy on Hacker News. 679 posts.
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Discover how an open directory exposed a threat actor impersonating EFF to target gamers and how we mapped their infrastructure to Stealc & Pyramid C2.
Recently I got a friend to finally join me on Signal. He asked something about whether or not Signal is truly secure and private, like if it was safe from US government surveillance. I told him: “Well, it’s end-to-end encrypted, so they don’t know what we’re talking about, but they definitely know that we’re talking…
A dns-prefetch tag in an HTML email makes Evolution Mail do a DNS lookup on open, even with remote content blocked. The developers blame WebKitGTK.
Two interesting new papers regarding LLM security and prompt injection came to my attention this weekend. Agents Rule of Two: A Practical Approach to AI Agent Security The first is …
After my previous post on ARM exploitation, where we crafted an exploit for a known vulnerability, I decided to continue the research on a more modern IoT target. In this follow-up post, I will take you through building a considerably more complex binary exploit. We will explore the path from firmware extraction and…
Musings on SBOMs and licensing woes.
In this blog, we share a new finding in the XZ Utils saga: several Docker images built around the time of the compromise contain the backdoor. At first…
Did you know that Gmail can use your emails and attachments for its smart features? Here's how to check your settings.
If the Supreme Court doesn’t reverse a lower court’s ruling, internet service providers (ISPs) could be forced to terminate people’s internet access based on nothing more than mere accusations of copyright infringement. This would threaten innocent users who rely on broadband for essential aspects...
Every day, corporations track our movements through license plate scanners, building detailed profiles of where we go, when we go there, and who we visit. When they do this to us in violation of data privacy laws, we’ve suffered a real harm—period. We shouldn’t need to prove we’ve suffered...
Just before a decisive meeting in Brussels, digital rights expert and former Member of the European Parliament Dr. Patrick Breyer is sounding the alarm. Using a "deceptive sleight of hand," a mandatory and expanded Chat Control is being pushed through the back door, in a form even more intrusive tha
I was chatting with a close friend of mine and he sent me a link to his new SaaS that he's developing.
An Open Letter To JD Vance From A Former CIA Officer On The Counterintelligence Risks Of Smartwatches Mr. Vice President, Congratulations on your ascendancy to the Vice President of the United States of America. While we are an apolitical platform, we wish you nothing but success, the country depends on you. In a rec
KeePassXC Password Manager
We successfully exploited two discontinued network devices at DistrictCon’s inaugural Junkyard competition in February, winning runner-up for Most Innovative Exploitation Technique. Our exploit chains demonstrate why end-of-life hardware poses persistent security risks.
Spoiler: I have data from the story in the title of this post, it's mostly what I expected it to be, I've just added it to HIBP where I've called it "Data Troll", and I'm going to give everyone a lot more context below. Here goes:
Let's Discuss the organization providing a false sense of security at an unbeatable price.
Your trusty Dependabot (and other GitHub bots) might be an unwitting accomplice. Through "Confused Deputy" attacks, they can be tricked into merging malicious code. This doesn't stop here. It can escalate to full command injection via crafted branch names and even bypass branch protection rules. Plus, we disclose two…
A quick note on the importance of reading the terms of service!
This year we are calling to FREE THE INTERNET. Your donation will help break the chains of censorship and surveillance. If you give now during the campaign, your donation will be matched by our supporters at Power Up Privacy. This means a $25 donation will have a $50 impact.
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.
Learn more about new Google Wallet updates, including new ways to use your digital ID for age and identity verification.
SynthID is a tool to watermark and identify AI-generated content, helping to foster transparency and trust in generative AI.
It was yet another day at the office. Our team was internally discussing moving to a different platform analytics solution. Our team was really leaning more towards Posthog. It’s one of the brilliant -I personally believe it’s the best- products on the market. And that’s where the story has begun… We have a somewhat…
Last month, KrebsOnSecurity tracked the sudden emergence of hundreds of polished online gaming and wagering websites that lure people with free credits and eventually abscond with any cryptocurrency funds deposited by players. We’ve since learned that these scam gambling sites have proliferated thanks to a new Russian…
This new paper by 11 authors from organizations including IBM, Invariant Labs, ETH Zurich, Google and Microsoft is an excellent addition to the literature on prompt injection and LLM security. …
Explore OpenAI’s approach to balancing teen safety, freedom, and privacy in AI use.
News and insights on the Android platform, developer tools, and events.
The following is an update on the security vulnerability identified in December 2025.
