Cisco quantum network controller lets apps order entanglement on demand

Help Net Security coverage includes active exploitation of critical Atlassian Data Center arbitrary file access vulnerability CVE-2026-21589, an ongoing FortiBleed campaign targeting internet-facing Fortinet FortiGate and SSL VPN devices with reported administrator lockouts and more than 86,644 compromised devices, plus announcements covering AI-driven security testing, SIEM, threat hunting, phishing response, third-party risk, and quantum networking. The most urgent items are the Atlassian exploitation and Fortinet campaign.