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Help Net Security

Cybersecurity news with a focus on enterprise security. Discover what matters in the world of information security today.

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News


helpnetsecurity.com > 09/09/2026 > f5-big-ip-apm-rootkit-hides-web-shell-in-memory

Hackers deploy Linux rootkit on F5 BIG-IP APM devices, hiding web shell in memory

5+ day, 6+ hour ago   (508+ words) A rootkit found on hacked F5 BIG-IP APM devices skips the usual step of writing a web shell to disk, hiding it in memory instead, according to Sophos. F5 BIG-IP APM provides access policy enforcement to secure access to apps, APIs, and…...


helpnetsecurity.com > 09/07/2026 > connectwise-screenconnect-file-transfer-flaw

Attackers spread malware through ScreenConnect file transfers

1+ week, 8+ hour ago   (324+ words) A file transfer flaw in ScreenConnect Remote Access Support and Access sessions affects both Cloud and On-Premise deployments, ConnectWise confirmed. “A CVE identifier and an official fix will be issued within the week,” the company wrote in its September 3 advisory....


helpnetsecurity.com > 09/02/2026 > vali-cyber-zerolock-5-hypervisor-security

Vali Cyber ZeroLock 5 brings MFA to the hypervisor command line

1+ week, 5+ day ago   (474+ words) Vali Cyber released ZeroLock 5, a major release focused on closing the two most dangerous gaps in hypervisor security: insider threats and stolen credentials on ESX and Linux hosts. Over the past two years, ransomware operators and nation-state actors alike have…...


helpnetsecurity.com > 09/01/2026 > spring-ring-vishing-campaign-microsoft-teams

Vishing campaign abuses Microsoft Teams to give attackers a foothold in company networks

1+ week, 6+ day ago   (462+ words) A coordinated voice-phishing (vishing) campaign, named Spring Ring, used fake IT support accounts on Microsoft Teams to trick employees into installing malware or granting remote access to their computers, according to Unit 42, Palo Alto Networks’ threat intelligence team. The campaign…...


helpnetsecurity.com > 09/01/2026 > revstealer-malware-claude-opus-5-github

Fake Claude Opus 5 app delivers malware and wipes its own tracks

1+ week, 6+ day ago   (572+ words) A malicious GitHub repository impersonating Anthropic and claiming to offer free access to “Claude Opus 5” is delivering RevStealer, Windows information-stealing malware that targets passwords, cryptocurrency wallet data and login credentials, according to Morphisec. Repository README using Claude Opus 5 branding and…...


helpnetsecurity.com > 08/17/2026 > windows-11-security-bypass-research

Windows 11???s strongest security defenses can be bypassed without a screwdriver

4+ week, 12+ hour ago   (597+ words) Researchers from the University of Birmingham and Durham University have found a way to knock down some of the toughest protections in Windows 11 without physically opening or modifying the target machine. The attack assumes the attacker has already gained privileged…...