There’s been a recent surge in cloud ransomware attacks. Examples of such attacks were observed by Sophos X-Ops, which detected the ransomware group BlackCat/ALPHV using a new Sphinx encryptor variant to encrypt Azure storage accounts by employing stolen Azure Storage account keys. The BlackCat/ALPHV ransomware group is the same entity that claimed responsibility for infiltrating MGM’s infrastructure and encrypting more than 100 ESXi hypervisors.