Over the past few months, we’ve published multiple posts here about ransomware – Surprise, Petya/Mischa, Cerber, and cuteRansomware to name a few. One of the common themes that we’ve seen across these different strains of ransomware is cloud apps playing a role in each attack. However, as I looked back on these recent examples, it wasn’t the similarities – the use of cloud apps – that struck me. Rather, it was the different roles that cloud apps were playing in these ransomware attacks. As we all continue to look for ways to bolster our defenses against ransomware and other malware, I thought it might be useful to take a step back and enumerate the ways that we’ve seen cloud apps being used by ransomware today.