Following the Blackhat conference, I participated to Defcon CTF finals as part of the 0daysober team which qualified in 10th position last June. This event
Knock knock. Who’s there? Not me.
tl;dr; Port scanning the entire IPv4 address space daily for months at a time generates a lot of very juicy data — and more than a
Black Hat USA 2015
Last week I attended Blackhat USA as part of a trip to Las Vegas to participate in DEFCON CTF finals with the 0daysober team. Here is
OpenSSH jump-host and file-transfer
This article was inspired by a previous post on my personal blog: https://www.freeture.ch/?p=815 Intro OpenSSH is a great tool, everybody knows that (even Microsoft). It’s
Positive Hack Days V
I recently attended the Positive Hack Days V forum which took place in Moscow over two days. Interesting and diverse presentations were given there together
Lazy Crypto Reloaded
After figuring out how to design secure ciphers, cryptographers tried to find how to make secure ciphers as simple as possible. Permutation-based cryptography is the