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Security & Privacy

The most popular blog posts about security & privacy on Hacker News. 293 posts.

2020
62

Linux Hardening Guide

Linux is not a secure operating system . However, there are steps you can take to improve it. This guide aims to explain how to harden Linux as much as possible for security and privacy. This guide attempts to be distribution-agnostic and is not tied to any specific one. DISCLAIMER: Do not attempt to apply anything in…

63

Hacking Grindr Accounts with Copy and Paste

Sexuality, relationships and online dating are all rather personal things. They're aspects of our lives that many people choose to keep private or at the very least, share only with people of our choosing. Grindr [https://www.grindr.com/] is "The World's Largest Social Networking App for Gay,

76

Memory safe ‘curl’ for a more secure internet

tldr: work has started to make Hyper work as a backend in curl for HTTP. curl and its data transfer core, libcurl, is all written in C. The language C is known and infamous for not being memory safe and for being easy to mess up and as a result accidentally cause security problems. At … Continue reading rust in curl…

78

Dangerous domain corp.com goes up for sale

As an early domain name investor, Mike O’Connor had by 1994 snatched up several choice online destinations, including bar.com, cafes.com, grill.com, place.com, pub.com and television.com. Some he sold over the years, but for the past 26 years O’Connor refused to auction perhaps the most sensitive domain in his stable…

80

Inrupt, Tim Berners-Lee's Solid, and Me

For decades, I have been talking about the importance of individual privacy. For almost as long, I have been using the metaphor of digital feudalism to describe how large companies have become central control points for our data. And for maybe half a decade, I have been talking about the world-sized robot that is the…

81

Disclosure: Another macOS privacy protections bypass

Today I'm disclosing a macOS privacy protections bypass. (You may recall that I disclosed another one last year .) The privacy protections system (also known as TCC: Transparency, Consent, and Control) was introduced in macOS Mojave, and one of its purposes is to protect certain files on your Mac from access by…

83

Why I Quit Using Google

So I was recently asked why I prefer to use free and open source software over more conventional and popular proprietary software and services. A few years ago I was an avid Google user. I was deep…

85

So I reverse engineered two dating apps

In this post I show some of my findings during the reverse engineering of the apps Coffee Meets Bagel and The League. I have identified several critical vulnerabilities during the research, all of which have been reported to the affected vendors. Introduction In these unprecedented times, more and more people are…

86

How to properly manage SSH keys for server access

This article was on the hacker news frontpage. You can find the related discussion here. Every developer needs access to some servers for example to check the application logs. Usually, this is done using public-private key encryption where each developer generates their own public-private key pair. The public keys of…

88

We didn't encrypt your password, we hashed it

You've possibly just found out you're in a data breach. The organisation involved may have contacted you and advised your password was exposed but fortunately, they encrypted it. But you should change it anyway. Huh? Isn't the whole point of encryption that it protects data when exposed