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The most popular blog posts about security & privacy on Hacker News. 536 posts.
[UPDATE Since this was posted in 2024 : Major US telcos like AT&T, T-Mobile, and Verizon have suffered a months-long breach (the ongoing Salt Typhoon attack). These companies, of course, pass along the unencrypted SMSes vital to countless log in flows, account re-activations, and password resets. They are now known to…
We discovered a fundamental design problem in VPNs and we're calling it TunnelVision. This problem lets someone see what you're doing online, even if you think you're safely using a VPN.
Photographic memory comes to Windows, and is the biggest security setback in a decade.
Hello friends, this is the first of two, possibly three (if and when I have time to finish the Windows research) writeups. We will start with targeting GNU/Lin…
This post briefly summarizes part of a talk I gave in 2018. All information in this post has been accessible on YouTube since then. There is no new information or news in this post. On Mastodon recently, jsveningsson@mastodon.social asked me: Having an annoying argument on Threads about Apple generated passwords…
Playing Chess is one of the many hobbies I like to do in my spare time, apart from tinkering around with technology. However, I'm not very good at it, and after losing many games, I decided to see if I could do something I'm much better at; hacking the system!
MDM push of password based IMAP, CalDAV, CardDAV, STMP, POP and Exchange ActiveSync (Google Sync) will no longer work for customers who try to connect to an LSA for the first time.
I’ve had the curiosity to explore radio communication protocols for a few years now, ever since I’ve started fiddling around with an RTL-SDR dongle. I always had the goal of figuring out how data is transmitted in remote controls (car key fobs particularly), trying replay attacks, and other possible attack vectors.
When you launch an app, macOS connects to Apple's OCSP service to check whether the app's Developer ID code signing certificate has been revoked by Apple. In November 2020, Apple's OCSP service experienced a mass outage , preventing Mac users worldwide from launching apps. In response and remedy to this outage, Apple…
After Snowden’s whistleblowing in 2013, large parts of the internet became encrypted, enabling private and secure communication. Not everyone has welcomed this change. Most notably, the FBI and other U.S. government agencies have fought what is often called the “crypto wars”, the war on encryption. In recent years…
turns out, you can even search for them with powerful search engines!
If Instagram and Facebook users want to withdraw their consent, they have to buy an expensive subscription
This report outlines the safety work carried out prior to releasing OpenAI o1 and o1-mini, including external red teaming and frontier risk evaluations according to our Preparedness Framework.
We examine the recent CrowdStrike outage and provide a technical overview of the root cause.
Today we are announcing our intent to end Online Certificate Status Protocol (OCSP) support in favor of Certificate Revocation Lists (CRLs) as soon as possible. OCSP and CRLs are both mechanisms by which CAs can communicate certificate revocation information, but CRLs have significant advantages over OCSP. Let’s…
This blog post details how I found CVE-2024-6778 and CVE-2024-5836, which are vulnerabilities within the Chromium web browser which allowed for a sandbox escape from a browser extension.
Sysadmin doing syadmin stuff
Kaspersky analysis of the backdoor recently found in XZ, which is used in many popular Linux distributions and in OpenSSH server process.
A tale about exploiting KernelCTF Mitigation, Debian, and Ubuntu instances with a double-free in nf_tables in the Linux kernel, using novel techniques like Dirty Pagedirectory. All without even having to recompile the exploit for different kernel targets once.
We have found that you could be leaking traffic on macOS after system updates. To our current knowledge a reboot resolves it. We are currently investigating this and will follow up with more information.
So, let's say that a security vendor, we'll call them ClownStrike, accidentally takes down most of their Windows install base with a poorly tested content update. Rough day at the office, huh? There are lots of things you could say about this, lots of reasons it happens this way, lots of people to blame and not to…
Several Apple customers recently reported being targeted in elaborate phishing attacks that involve what appears to be a bug in Apple’s password reset feature. In this scenario, a target’s Apple devices are forced to display dozens of system-level prompts that prevent the devices from being used until the recipient…
The summer of 2007 was an eventful one if you were into cell phones. It all started on June 29 when Apple announced the release of the iPhone. If you have never taken the time to watch the full keynote, I highly recommend it.
We are excited to announce the release of mitmproxy 11, which introduces full support for HTTP/3 in both transparent and reverse proxy modes. We’re also bringing in a ton of DNS improvements that we’ll cover in this blog post.
This article explore Podman's features and benefits, comparing it to Docker and describing a step-by-step migration guide
