Lone Hacker Used Infostealers to Access Data at 50 Global Companies

**Executive summary:** A single attacker used infostealer malware to collect saved browser passwords and then accessed cloud file-sharing services (ShareFile, Nextcloud, OwnCloud) at roughly 50 global companies lacking MFA, exfiltrating large volumes of sensitive corporate, medical, and military-related data which are now being sold on dark web forums.