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GhostLock Attack Leverages Windows file-sharing to Lock Files Access Like Ransomware

📅 11 May 2026 at 11:38 UTC📰 Cyber Security NewsView original source ↗
GhostLock Attack Leverages Windows file-sharing to Lock Files Access Like Ransomware

Traditional ransomware disrupts organizations by encrypting data and demanding payment for decryption keys. However, a newly disclosed technique called GhostLock demonstrates a fundamentally different availability attack that achieves the same business disruption without writing a single encrypted byte to disk. Discovered by Kim Dvash, an Offensive Security Team Leader, GhostLock exploits standard Windows file-sharing behavior […] The post GhostLock Attack Leverages Windows file-sharing to Lock Files Access Like Ransomware appeared first on Cyber Security News.

🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview

GhostLock is a novel attack that exploits Windows file-sharing behavior to disrupt business operations by locking files without encrypting them, causing similar disruption to ransomware attacks.

⚙️Technical Details
Affected Systems
Windows systems
Attack Vectors
standard Windows file-sharing behavior
💥Impact Assessment
Severity: critical
Who Is at Risk
Organizations using Windows systems with enabled file-sharing
🛡️Recommended Actions
1Enable file-sharing restrictions on sensitive data
2Monitor system logs for suspicious activity related to file-sharing
3Implement additional security controls to detect and prevent similar attacks

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