Defendnot is a tool developed by “es3n1n” that disables Windows Defender by exploiting the Windows Security Center (WSC) API to impersonate a legitimate antivirus. It registers itself as a phantom antivirus, requiring administrative privileges. While showcasing advanced reverse engineering techniques, security experts warn it could be misused by malware to disable security protections.

FBI takes down botnet exploiting aging routers
Organizations have been advised to replace devices that may be compromised to ensure security. This precaution aims to protect sensitive information and maintain operational integrity.