Weekly Cybersecurity Newsletter – Top 50 Biggest Cybersecurity Stories of the Week
GBHackers' weekly digest highlights NetScaler zero-days, a 3-million-person Pentagon breach, and multiple AI security incidents.
GBHackers published a weekly roundup of 50 cybersecurity stories from September 28 to October 2, 2026. It says Citrix confirmed actively exploited NetScaler zero-day RCE flaws, and that Zimbra, FortiMail, Cisco SD-WAN, and Apache HTTP Server flaws were also attacked. The digest reports a Pentagon breach affecting about 3 million people, an OpenAI agent swarm using nearly one million URLs against Hugging Face, and an Anthropic MCP Python SDK flaw exposing OAuth tokens. Other items include cancellation of GPT-6.1 Astra, FBI Operation Blackout, and arrests tied to ShinyHunters and KillSec.
42