Cybercriminals allegedly hacked tens of thousands of Fortinet firewalls used by major companies all over the world

Cybercriminals have compromised tens of thousands of Fortinet firewalls and VPNs used by major companies all over the world, according to two cybersecurity firms. The widespread hacking campaign, which is ongoing and has been dubbed FortiBleed, appears to not involve Read More …

Palo Alto VPN bug graduates from advisory to active exploitation

Palo Alto customers are being been told to patch yet another internet-facing security flaw after researchers caught attackers bypassing GlobalProtect authentication and gaining unauthorized VPN access. The flaw, tracked as CVE-2026-0257, affects PAN-OS deployments using GlobalProtect authentication override cookies under specific Read More …

Critical Buffer Overflow in Palo Alto Networks PAN-OS User-ID Authentication Portal (CVE-2026-0300)

On May 6, 2026, Palo Alto Networks published a security advisory for CVE-2026-0300, a critical unauthenticated buffer overflow vulnerability affecting PAN-OS PA-Series and VM-Series firewall appliances. Prisma Access, Cloud NGFW, and Panorama appliances are not affected by this vulnerability. The Read More …

Trellix confirms data breach after hack of ‘a portion’ of its source code

Cybersecurity giant Trellix has confirmed suffering a cyberattack in which threat actors accessed parts of its source code. In a brief announcement published on its website, Trellix said it had identified “unauthorized access to a portion of [its] source code Read More …

Patch these critical Fortinet sandbox bugs that let attackers bypass login, run commands over HTTP

Watch out for more Fortinet vulns! Two critical bugs in Fortinet’s sandbox could allow unauthenticated attackers to bypass authentication or execute unauthorized code on vulnerable systems. Luckily, the security vendor has issued fixes – so patch now – and so Read More …

Attackers exploited critical FortiClient EMS bug as a 0-day

Fortinet released an emergency patch over the weekend for a critical FortiClient Enterprise Management Server (EMS) bug believed to be under attack since at least March 31. The flaw, tracked as CVE-2026-35616, is an improper access control vulnerability that allows Read More …

Bogus Avast website fakes virus scan, installs Venom Stealer instead

A fake website impersonating Avast antivirus is tricking people into infecting their own computers. The site looks legitimate, runs what appears to be a virus scan, and claims your system is full of threats. But the results are fake: when Read More …

Fortinet patches FortiGate Firewall vulnerabilities that allowed hackers to steal enterprise credentials

At the start of the year, cybercriminals were exploiting three vulnerabilities in FortiGate Next-Generation Firewalls (NGFW) to establish persistence and move laterally throughout the network. All recorded attacks were stopped before they could do any meaningful harm, and FortiGate has Read More …

Threat intelligence supply chain is full of weak links, researchers find

Researchers from Georgia Tech have found that the supply chain for threat intelligence data is susceptible to adversarial action, and proposed a method to improve data sharing that they think will make it stronger. Brenden Kuerbis, a research scientist at Read More …