Every blog post that took off on Hacker News, ranked by the votes of its best submission. 4,333 posts.
Towards the end of last year, we learned that a group (allegedly affiliated with the Chinese government, referred to as “Salt Typhoon”) breached T-Mobile and other telecommunications co…
Personal blog of Julien (jvoisin) Voisin
How to find out someone's phone number if you just know their email address and how it can be automated using a new OSINT tool: email2phonenumber
Firefox can now do offline and privacy-preserving translation of eight languages with more on the way. Powered by open-source and machine-learning.
My goal in this post is to skim my observations on the state of software design and development over the past year, and to try to find a meaningful way forward for myself for 2019. My perspective is limited by the fact that I have worked exclusively in client-side software security for the past 7.5 years. Still, I…
Imagine you create an empty, private AWS S3 bucket in a region of your preference. What will your AWS bill be the next morning?
Between March 2023 and May 2023, we identified multiple security vulnerabilities within points.com, the backend provider for a significant portion of airline and hotel rewards programs. These vulnerabilities would have enabled an attacker to access sensitive customer account information, including names, billing…
A few months ago, I discovered a remote code execution issue in the Discord desktop application and I reported it via their Bug Bounty Prog...
While exploring the file system on a jailbroken iPhone 6s, I stumbled upon an interesting folder:
AT&T Corp. disclosed today that a new data breach has exposed phone call and text message records for roughly 110 million people — nearly all of its customers. AT&T said it delayed disclosing the incident in response to “national security and public safety concerns,” noting that some of the records included data that…
macOS 11.2, 11.2.1 and 11.2.2 have come in quick succession. What do they tell us about how difficult it is to update Big Sur’s sealed System volume? Is this the way to go?
Tell me if you’ve been in this situation: you’re chatting about online anonymity with your wife and the other Knight-Mozilla Fellows over a pizza in Florence. A quiet-spoken stranger who had been sitting across the room walks up to your table and says “are you all here for the Tor hackathon?” You respond “why yes, yes…
Memory-Dump-UEFI is a UEFI application for dumping the contents of RAM.
TL;DR: An undocumented API in Google home devices is easily exploitable. This command will reboot any on your local network: nmap –open -p 8008 192.168.1.0/24 | awk ‘/is up/ {print up};…
Visual studio code tunnel Introduction Since July 2023, Microsoft is offering the perfect reverse shell, embedded inside Visual Studio Code, a widely used …
An identity theft service that sold Social Security and drivers license numbers — as well as bank account and credit card data on millions of Americans — purchased much of its data from Experian , one of the three major credit bureaus, according to a lengthy investigation by KrebsOnSecurity.
It’s an established fact on the internet that we have ran out of IP(v4) addresses , and we are starting to see the pressure on obtaining IPv4 space. For example if you want to get a /24 block from RIPE NCC when you sign up as a member, then you are currently looking at a 2 month wait for a recycled IPv4 /24 block .
LastPass accounts are under attack. I look into how user’s master passwords might have leaked.
Today, Let's Encrypt announced that they are enabling an extension to DNS CAA records known as ACME-CAA ( RFC 8657 ). This came as a surprise to me, but a very pleasant one, since I wrote the ACME-CAA specification back in 2016 with Let's Encrypt in mind, and it was finally published as RFC 8657 back in 2019. To my…
I was reticent to write this blog post because it leaves a lot of questions unanswered, questions that we should be able to answer. It's about a data breach with almost 90GB of personal information in it across tens of millions of records - including mine. Here's what I
The long-running BBC sci-fi show Doctor Who has a recurring plot device where the Doctor manages to get out of trouble by showing an identity card which is actually completely blank. Of course, thi…
As I've previously blogged in Pure Rust Implementation of Apple Code Signing (2021-04-14) and Expanding Apple Ecosystem Access with Open Source, Multi Platform Code signing (2022-04-25), I've been hacking on an open source implementation of Apple code signing and notarization using the Rust programming language. This…
Back in 2007 I stumbled upon something called a QR Code . It was a neat two-dimensional barcode that encodes textual information visually—with URLs being a promising application for the emerging smartphone market (thanks to the release of the iPhone that year). So I did what any self-respecting personal blogger would…
Bug Bounty & Application Security
🇫🇷 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
