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Researchers uncovered a 230-node cloud-based email relay network after the actor PCPJack accidentally exposed tools, logs, and C2 files online A threat actor tracked as PCPJack compromised 230 cloud servers across Amazon Web Services, Google Cloud, and Microsoft Azure and turned them into a covert email relay network. Hunt.io researchers discovered the operation because PCPJack […]

More from Security Affairs 5 Jun 2026, 10:19 p.m. Incident · 2 stories Amazon (company) Amazon Web Services Azure Cloud Compromise Email Exposure Google Microsoft Research Threat Actor
Bank Info Security 1 year, 6 months ago

Ransomware Campaign Targets Amazon S3 Buckets

Threat Actor 'Codefinger' Targets Cloud EnvironmentsA ransomware group is targeting Amazon S3 buckets, exploiting the data stored there using AWS’s server-side encryption with customer keys and demanding a ransom in exchange for the encryption key needed to unlock the data. The group uses compromised or publicly exposed AWS account credentials.

More from Bank Info Security 15 Jan 2025, 11:30 a.m. Amazon (company) Amazon Web Services Cloud Compromise Credentials Encryption Exposure Ransom Ransomware Threat Actor