Category: GBHackers Security | #1 Globally Trusted Cyber Security News Platform

Microsoft Website Displays Security Warning After Certificate Expiry

Microsoft has triggered widespread browser security warnings after allowing the TLS certificate for a critical Microsoft 365 connectivity testing domain to expire, raising concerns over certificate lifecycle management practices. The affected domain, connectivity.office.com, widely used by system administrators and enterprise…

Jenkins RCE Flaw Exploited by Attackers in the Wild

A remote code execution (RCE) vulnerability in Jenkins, tracked as CVE-2026-53435, is now actively exploited in the wild. The flaw, stemming from insecure deserialization during Jenkins’ config.xml processing, allows unauthenticated or low-privileged attackers to execute arbitrary code on vulnerable instances, posing a…

Palo Alto Warns GlobalProtect VPN Flaw Is Being Actively Exploited

Palo Alto Networks has issued an urgent warning after confirming active exploitation of a GlobalProtect VPN vulnerability, tracked as CVE-2026-0257, impacting PAN-OS deployments with specific configurations. The flaw, which affects the GlobalProtect portal and gateway components, enables an authentication bypass…

Threat Actor Malware Platform Exposed Through Unlocked PHP Installer Page

A misconfigured PHP-based malware distribution platform has been exposed after a security researcher inadvertently gained administrative access via an unlocked installation page, highlighting critical operational security failures in the active threat actor’s infrastructure. The incident, documented on June 11, 2026,…