Cyber Daily News for April 21, 2026

Cyber Daily News for April 21, 2026 Cyber Daily News is also available via podcast! https://feeds.transistor.fm/cyber-daily-news Stories mentioned in today's briefing: - North Korean Blamed for $290m KelpDAO Crypto Heist https://www.infosecurity-magazine.com/news/north-korean-blamed-290m-kelpdao/ - U.S. CISA adds Cisco Catalyst, Kentico Xperience, PaperCut NG/MF, Synacor ZCS, Quest KACE SMA, and JetBrains TeamCity flaws to its Known Exploited Vulnerabilities catalog https://securityaffairs.com/191080/hacking/u-s-cisa-adds-cisco-catalyst-kentico-xperience-papercut-ng-mf-synacor-zcs-quest-kace-sma-and-jetbrains-teamcity-flaws-to-its-known-exploited-vulnerabilities-catalog.html - The US NSA is using Anthropic's Claude Mythos despite supply chain risk https://securityaffairs.com/191087/ai/the-us-nsa-is-using-anthropics-claude-mythos-despite-supply-chain-risk.html - ZionSiphon Malware Targets Water Infrastructure Systems https://www.infosecurity-magazine.com/news/zionsiphon-malware-water/ - Vercel Confirms Cyber Incident After Sophisticated Attacker Exploits Third-Party Tool https://www.infosecurity-magazine.com/news/vercel-cyber-incident-threat-actor/ - Bluesky hit by 24-hour DDoS attack as pro-Iran group claims responsibility https://securityaffairs.com/191059/security/bluesky-hit-by-24-hour-ddos-attack-as-pro-iran-group-claims-responsibility.html - France's ANTS ID System website hit by cyberattack, possible data breach https://securityaffairs.com/191069/data-breach/frances-ants-id-system-website-hit-by-cyberattack-possible-data-breach.html - Scattered Spider member Tyler Buchanan pleads guilty to major crypto theft https://securityaffairs.com/191052/cyber-crime/scattered-spider-member-tyler-buchanan-pleads-guilty-to-major-crypto-theft.html