gogrpc backdoor

The gogrpc backdoor tag covers a specific malware threat targeting Windows environments, as detailed in recent research from Zscaler ThreatLabz. The content focuses on a campaign that uses voice phishing, or vishing, through Microsoft Teams calls to trick users into approving Quick Assist sessions. Once remote control is granted, attackers install the GoGRPC backdoor, gaining a foothold for further compromise. The activity has been tracked since January 2026 and is linked to an initial-access broker likely supporting ransomware operations. For Windows administrators, the key takeaway is that remote-support tools like Quick Assist are not inherently malicious, but unsolicited Teams calls requesting access should be treated with caution. This tag highlights the intersection of social engineering, remote access, and Windows security.