#6
The Hacker News
general
June 05, 2026 at 05:34 UTC
PCPJack Hijacks 230 AWS, Google Cloud, and Azure Servers for Covert SMTP Relay Network
By [email protected] (The Hacker News)
AI Summary
Threat actor PCPJack hijacked 230 cloud servers across AWS, Google Cloud, and Azure — spanning the U.S., Europe, and Asia — converting them into a covert SMTP relay network that syncs verified mail relay proxies to downstream consumers every five minutes. This infrastructure abuse enables large-scale phishing and spam campaigns while obscuring attribution behind legitimate cloud provider IP space.
Relevance score: 82.0/100
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