I’m back in Amsterdam for the 8th edition of the security conference Hack in the Box. Last year, I was not able to attend but I’m attending it for a while (you can reread all my wrap-up’s here). What to say? It’s a very strong organisation, everything running fine, a
I published the following diary on isc.sans.org: “Tracking Website Defacers with HTTP Referers”. In a previous diary, I explained how pictures may affect your website reputation. Although a suggested recommendation was to prevent cross-linking by using the HTTP referer, this is a control that I do not implement on my personal blog,
I published the following diary on isc.sans.org: “Whitelists: The Holy Grail of Attackers“. As a defender, take the time to put yourself in the place of a bad guy for a few minutes. You’re writing some malicious code and you need to download payloads from the Internet or hide your
I published the following diary on isc.sans.org: “Pro & Con of Outsourcing your SOC“. I’m involved in a project to deploy a SIEM (“Security Information &Event Management“) / SOC (“Security Operation Center“) for a customer. The current approach is to outsource the services to an external company also called a
I published the following diary on isc.sans.org: “Diverting built-in features for the bad“. Sometimes you may find very small pieces of malicious code. Yesterday, I caught this very small Javascript sample with only 2 lines of code… [Read more]
I published the following diary on isc.sans.org: “Logical & Physical Security Correlation“. Today, I would like to review an example how we can improve our daily security operations or, for our users, how to help in detecting suspicious content. Last week, I received the following email in my corporate mailbox.
I published the following diary on isc.sans.org: “Nicely Obfuscated JavaScript Sample“. One of our readers sent us an interesting sample that was captured by his anti-spam. The suspicious email had an HTML file attached to it. By having a look at the file manually, it is heavily obfuscated and the payload
I’m just back from Heidelberg so here is the last wrap-up for the TROOPERS 2017 edition. This day was a little bit more difficult due to the fatigue and the social event of yesterday. That’s why the wrap-up will be shorter…  The second keynote was presented by Mara Tam: “Magical
The third day is already over! Today the regular talks were scheduled split in three tracks: offensive, defensive and a specific one dedicated to SAP. The first slot at 09:00 was, as usual, a keynote. Enno Rey presented ten years of TROOPERS. What happened during all those editions? The main
This is my wrap-up for the 2nd day of “NGI†at TROOPERS. My first choice for today was “Authenticate like a boss†by Pete Herzog. This talk was less technical than expected but interesting. It focussed on a complex problem: Identification. It’s not only relevant for users but for anything
