Yonathan Klijnsma is a senior threat intelligence analyst working for Fox-IT, a Dutch IT security company. Yonathan specializes in the analysis and tracking of attack campaigns, work out the attacker profiles and investigate the techniques and tools used by attackers. Yonathan's area of focus lies in the espionage related cases. Outside of work Yonathan likes taking things apart and figuring out how they work; be it physical devices or digital like malware or ransomware. Occasionally a write-up of one of these projects ends up on his personal blog.