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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

Help Net Security
helpnetsecurity.com > 09/13/2026 > week-in-review-linux-rootkit-deployed-on-f5-big-ip-apm-devices-cisco-fmc-bugs-exploited

Week in review: Linux rootkit deployed on F5 BIG-IP APM devices, Cisco FMC bugs exploited

4+ hour, 36+ min ago   (1419+ words) Here’s an overview of some of last week’s most interesting news, articles, interviews and videos: Zero trust AI agents demand a different kind of security In this interview, Chris Webber, VP, Product Marketing at Teleport, explains why zero trust principles…...

Help Net Security
helpnetsecurity.com > 09/10/2026 > browser-based-phishing-blob-urls-microsoft-oauth

Cybercriminals are building phishing pages that exist only inside victims' browsers

3+ day, 6+ hour ago   (352+ words) A phishing campaign routes victims through genuine Microsoft OAuth and Teams infrastructure before showing them a fake login page built entirely inside their own browser, according to researchers at Barracuda. “Instead of delivering a phishing page from a web server,…...

Help Net Security
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

4+ day, 1+ 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…...

Help Net Security
helpnetsecurity.com > 09/08/2026 > mathspace-data-breach-metabase-vulnerability

Mathspace breach exposes data on over a million students and parents

5+ day, 3+ hour ago   (415+ words) Mathspace has confirmed that attackers broke into its internal reporting system through an unpatched Metabase vulnerability and stole data belonging to more than a million students, parents, and school staff. The Sydney-based maths education company wrote in a blog post…...

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

Attackers spread malware through ScreenConnect file transfers

6+ day, 3+ 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....

Help Net Security
helpnetsecurity.com > 09/02/2026 > sality-botnet-disruption-crowdstrike-law-enforcement

Global sinkhole operation ends Sality botnet???s 23-year run

1+ week, 4+ day ago   (463+ words) Sality, a peer-to-peer (P2P) botnet that had been running for 23 years and infecting more than 15,000 machines worldwide, has been taken down in a joint operation by international law enforcement agencies, working with CrowdStrike and the Shadowserver Foundation. The operation cut Sality’s…...

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

Vali Cyber ZeroLock 5 brings MFA to the hypervisor command line

1+ week, 4+ 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…...

Help Net Security
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, 4+ 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…...

Help Net Security
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, 5+ 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…...

Help Net Security
helpnetsecurity.com > 08/31/2026 > healthcare-company-mckesson-data-breach

ShinyHunters claims it stole 284 million patient records from McKesson

1+ week, 6+ day ago   (394+ words) Healthcare company McKesson disclosed a cybersecurity incident in which hackers got into third-party applications and stole data. McKesson is a major U.S. healthcare company that distributes pharmaceuticals, medical supplies and other healthcare products to pharmacies, hospitals and clinics. According to the…...