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A newly disclosed flaw in Apache Tomcat’s Coyote engine—tracked as CVE-2025-53506—has surfaced in the latest round of HTTP/2 security advisories. First noted in the National Vulnerability Database five days ago, the weakness stems from Coyote’s failure to enforce a hard cap on concurrent streams when an HTTP/2 client never acknowledges the server’s initial SETTINGS frame. […]

The post Apache Tomcat Coyote Vulnerability Let Attackers Trigger DoS Attack appeared first on Cyber Security News.

In congressional testimony, President Trump’s former national security adviser said his use of Signal to coordinate military operations was “driven by” cybersecurity guidance from CISA.

The post Waltz brushes off SignalGate questions, points finger at CISA  appeared first on CyberScoop.

The National Cyber Security Centre (NCSC) has issued a critical advisory urging organizations to prioritize upgrading to Windows 11 before the October 14, 2025 end-of-life deadline for Windows 10. This recommendation comes amid growing concerns about the cybersecurity implications of maintaining legacy operating systems, particularly as cyber criminals increasingly target outdated infrastructure for exploitation. The […]

The post NCSC Urges Organizations to Upgrade Microsoft Windows 11 to Defend Cyberattacks appeared first on Cyber Security News.