Topics /

Security & Privacy

The most popular blog posts about security & privacy on Hacker News. 8,768 posts.

Any year
2641

Technology preview: Sealed sender for Signal

In addition to the end-to-end encryption that protects every Signal message, the Signal service is designed to minimize the data that is retained about Signal users. By design, it does not store a record of your contacts, social graph, conversation list, location, user avatar, user profile name, ...

2642

Quantum Resistance and the Signal Protocol

The Signal Protocol is a set of cryptographic specifications that provides end-to-end encryption for private communications exchanged daily by billions of people around the world. After its publication in 2013, the Signal Protocol was adopted not only by Signal but well beyond. Technical informat...

2650

ECDSA smartphone key extraction using $2 magnetic probe

We show that modern cryptographic software on mobile phones, implementing the ECDSA digital signature algorithm, may inadvertently expose its secret keys through physical side channels: electromagnetic radiation and power consumption which fluctuate in a way that depends on secret information during the cryptographic…

2656

Sonos is spying on me (and you)

I recently decided to get a wireless speaker for our Kitchen. Sonos seems like an obvious choice these days. The sound quality and aesthetics were very appealing. So I ordered a Sonos One SL speaker. In terms of sound quality and looks, I was very pleased. I’m not an audiophile but the sound quality seemed…

2658

Landlock-Ing Linux

Landlock is a Linux API that lets applications explicitly declare which resources they are allowed to access. Its philosophy is similar to OpenBSD’s unveil() and (less so) pledge() : programs can make a contract with the kernel stating, “I only need these files or resources — deny me everything else if I’m…

2661

Schneier's response to Eric Schmidt

Schmidt said: I think judgment matters. If you have something that you don’t want anyone to know, maybe you shouldn’t be doing it in the first place. If you really need that kind of privacy, the reality is that search engines—including Google—do retain this information for some time and it’s important, for example…

2670

Disappearing messages for Signal

The latest Signal release for iPhone, Android, and Desktop now includes support for disappearing messages. The timer has come With this update, any conversation can be configured to delete sent and received messages after a specified interval. The configuration applies to all parties of a convers...