SecurityWeek Briefing

 Trending:  "Recent Microsoft Defender vulnerability exploited as Zero-Day.

Views expressed in this cybersecurity, cyber crime update are those of the reporters and correspondents.  Accessed on 24 April 2026, 0253 UTC.

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Russ Roberts (https://www.hawaiicybersecurityjournal.net).

Thursday, April 23, 2026 Get Your Vulnerability Score: Silo-to-CTEM Maturity Assessment (Sponsored) TODAY'S CYBERSECURITY NEWS Trending: Recent Microsoft Defender Vulnerability Exploited as Zero-Day Chinese Firm’s AI Hacking Claims Draw Comparisons to Claude Mythos Apple Patches iOS Flaw Allowing Recovery of Deleted Chats Why Trusted Relationships Are the Newest Attack Surface Researchers: AI Can Autonomously Hack Cloud Systems With Minimal Oversight Cloudsmith Raises $72 Million in Series C Funding Luxury Cosmetics Giant Rituals Discloses Data Breach Rilian Raises $17.5 Million for AI-Native Security Orchestration Claude Mythos Finds 271 Firefox Vulnerabilities Silo-to-CTEM Maturity Assessment Benchmark your vulnerability management program across six dimensions of CTEM maturity and get a clear, structured view of where your organization is today. Learn More SecurityWeek Expert Insights Government Can’t Win the Cyber War Without the Private Sector - Securing national resilience now depends on faster, deeper partnerships with the private sector. (Steve Durbin) The Hidden ROI of Visibility: Better Decisions, Better Behavior, Better Security - Beyond monitoring and compliance, visibility acts as a powerful deterrent, shaping user behavior, improving collaboration, and enabling more accurate, data-driven security decisions. (Joshua Goldfarb) ADVERTISEMENT The Leading Conference Addressing AI Risk in the Enterprise If you missed it... Google Antigravity in Crosshairs of Security Researchers, Cybercriminals Are SBOMs Failing? Supply Chain Attacks Rise as Security Teams Struggle With SBOM Data After Bluesky, Mastodon Targeted in DDoS Attack Oracle Patches 450 Vulnerabilities With April 2026 CPU Most Serious Cyberattacks Against the UK Now From Russia, Iran and China, Cyber Chief Says New Wiper Malware Targeted Venezuelan Energy Sector Prior to US Intervention North Korean Hackers Use AppleScript, ClickFix in Fresh macOS Attacks Mirai Botnet Targets Flaw in Discontinued D-Link Routers Third US Security Expert Admits Helping Ransomware Gang View SecurityWeek's 2026 Virtual Event Lineup RSS Feed | LinkedIn | Webcasts | Virtual Events © 2026 Wired Business Media

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