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Europol Disrupts Major Malware Networks, Seizes 6.4 Million Stolen Credentials

Europol Disrupts Major Malware Networks, Seizes 6.4 Million Stolen Credentials

First seen 12 Nov 2026, 14:17 UTC • •

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ThreatCluster AI
ThreatCluster •November 13, 2026 at 07:12 UTC
  • •Europol seized 235 servers and 257 domains linked to Gootloader, CastleRAT, and StealC.
  • •Approximately 6.4 million stolen credentials were identified and will be shared with victim notification services.
  • •The operation targeted the cybercrime-as-a-service model, disrupting major malware distribution networks.

In a significant operation, Europol and law enforcement from nine countries dismantled the infrastructure behind three major malware families: Gootloader, CastleRAT, and StealC. This operation, part of Operation Endgame, resulted in the seizure of 235 servers and 257 domains. Authorities identified approximately 6.4 million sets of stolen credentials, which had been harvested from infected systems and were intended for resale or further cyberattacks, including ransomware. Gootloader, a malware loader, was primarily distributed through compromised WordPress sites, while CastleRAT allowed remote access to infected computers. StealC was designed to extract sensitive information such as passwords. The operation involved international collaboration and aimed to disrupt the cybercrime-as-a-service model. Victim data will be shared via platforms like Have I Been Pwned to alert affected individuals.

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Timeline

2026-11-12
Operation Endgame announced
Europol and international partners announced the dismantling of malware networks and seizure of 235 servers and 257 domains.
BleepingComputer
2026-11-12
6.4 million credentials recovered
Authorities identified 6.4 million stolen credentials during the operation, aimed at preventing further cyberattacks.
Europol.Europa.Eu
2026-11-12
Malware infrastructure targeted
The operation specifically targeted Gootloader, CastleRAT, and StealC, disrupting their distribution networks.
Justice

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Common questions

What malware was involved in this operation?
The operation targeted Gootloader, CastleRAT, and StealC, which are used for credential theft and ransomware attacks.
How many stolen credentials were recovered?
Authorities recovered approximately 6.4 million stolen credentials during the operation.
What should I do if my credentials were stolen?
Check platforms like Have I Been Pwned to see if your credentials were compromised and change your passwords.