Passive DNS is not a new technique but, for the last months, there was more and more noise around it. Passive DNS is a technique used to record all resolution requests performed by DNS resolvers (bigger they are, bigger they will collect) and then allow to search for historical data.
During this summer, I went to SANSFire, Defcon and BSidesLV. Usually, the month of September is lighter without big events for me. This is to prepare for the next wave of conferences ahead! Of course, BruCON will be held on the first week of October but, especially, Hack.lu which remains one of my favourite
I’m proud to have been selected to give a training at DeepSec (Vienna, Austria) in November: “Hunting with OSSEC“. This training is intended for Blue Team members and system/security engineers who would like to take advantage of the OSSEC integration capabilities with other tools and increase the visibility of their infrastructure behaviour.
A very quick post about a new thread which has been started yesterday on the OSS-Security mailing list. It’s about a vulnerability affecting almost ALL SSH server version. Quoted from the initial message; It affects all operating systems, all OpenSSH versions (we went back as far as OpenSSH 2.3.0, released
I published the following diary on isc.sans.org: “Searching for Geographically Improbable Login Attempts“: For the human brain, an IP address is not the best IOC because, like phone numbers, we are bad to remember them. That’s why DNS was created. But, in many log management applications, there are features to
TheHive is an awesome tool to perform incident management. One of the software components that is linked to TheHive is Cortex defined as a “Powerful observable analysis engine“. Let’s me explain why Cortex can save you a lot of time. When you are working on an incident in TheHive, observables are
The day three started quietly (let’s call this fact the post-social event effect) with a set of presentations around Blue Team activities. Alexandre Dulaunoy from CIRCL presented “Fail frequently to avoid disaster” or how to organically build an open threat intelligence sharing standard to keep the intelligence community free and sane!
And here we go with the wrap-up of the 3rd day of the SSTIC 2018 “Immodium” edition. Indeed, yesterday, a lot of people suffered from digestive problems (~40% of the 800 attendees were affected!). This will for sure remains a key story for this edition. Anyway, it was a good
The second day started with a topic this had a lot of interest for me: Docker containers or “Audit de sécurité d’un environnement Docker” by Julien Raeis and Matthieu Buffet. Docker is everywhere today and, like new technologies, is not always mature when deployed, sometimes in a corner by developers.