First round : Interview with an HR, common questions about motivations, SWOT, etc.. Then another one with a manager, explaining the working environment and constraints regarding the position (irregular hours, etc).
I then got an email from the HR telling me the first round was ok, and he was feeling confident about the next and second one, he kind of rushed me to do the interview the day after, so "we can sign quickly".
Second round : general information about the position, this time with a Team Leader, he asked me about my salary expectations etc.. Nothing special. Then I met a senior security analyst for technical questions, it was all about Linux commands, network protocols, malware analysis (very basic), and what my hobbies were. It went well. Finally I got the last one with the VP of KS, he asked me some more questions about my motivations, etc. At the end he told me there were some more candidates to interview so I may get a feedback after ~2-3 weeks.
More than 2 months later, no news, and they hired two people to fill the positions.