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Security & Privacy

The most popular blog posts about security & privacy on Hacker News. 8,770 posts.

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5491

Introducing the USB Stick of Death

Several months back we have been playing with different file systems on various system platforms, examining the security posture and robustness of numerous device drivers’ implementations. One of the configurations we spent some time on was the commonly used NTFS on Microsoft Windows – as the file system is rather…

5502

A Year-End Letter from our Executive Director

This letter was originally published in our 2022 annual report. The past year at ISRG has been a great one and I couldn’t be more proud of our staff, community, funders, and other partners that made it happen. Let’s Encrypt continues to thrive, serving more websites around the world than ever before with excellent…

5503

Android libstagefright still exploitable

Update (2015-08-13 1:16pm CST): We’ve been in contact with Zimperium and are working with them to provide coverage for detection of this flaw through their Stagefright Detector app. They have been very responsive (more so than the affected vendor) and we plan to alert them of similar flaws we’ve recently discovered…

5507

Virtual Machine Detection in the Browser (2019)

Virtual Machine (VM) detection is nothing new. Malware has been doing it for over a decade now. Over time the techniques have advanced as defenders learned new ways of avoiding VM detection. A while back a friend and I were working on a project related to exploit delivery via a web application for redteaming purposes…

5508

NY Payroll Company Vanishes with $35M

MyPayrollHR , a now defunct cloud-based payroll processing firm based in upstate New York, abruptly ceased operations this past week after stiffing employees at thousands of companies. The ongoing debacle, which allegedly involves malfeasance on the part of the payroll company’s CEO, resulted in countless people…

5514

64 bits ought to be enough for anybody

How quickly can we use brute force to guess a 64-bit number? The short answer is, it all depends on what resources are available. So we’re going to examine this problem starting with the most naive approach and then expand to other techniques involving parallelization. We’ll discuss parallelization at the CPU level…

5516

E-Mail Leaves an Evidence Trail

If you’re going to commit an illegal act, it’s best not to discuss it in e-mail. It’s also best to Google tech instructions rather than asking someone else to do it: One new detail from the indictment, however, points to just how unsophisticated Manafort seems to have been. Here’s the relevant passage from the…