Ivan Kwiatkowski Ivan Kwiatkowski is an OSCP and OSCE-certified penetration tester and malware analyst working as a senior security researcher in the Global Research and Analysis Team (GReAT) at Kaspersky Lab. Ivan's day-to-day job occasionally involves incident response and delivering training. He maintains an open-source dissection tool for Windows executables and his research has been presented at several cybersecurity conferences in Europe. As a digital privacy activist, he also operates an exit node of the Tor network.