16-year-old suspected leader of KillSec ransomware group arrested

16-year-old suspected leader of KillSec ransomware group arrested
Cyberattack on major Polish invoicing platform exposes customer data
Fake Zoom installer delivers new CloudSyncD macOS backdoor
New Cisco SD-WAN zero-day exploited in-the-wild (CVE-2026-76504)
U.S. CISA adds Cisco Catalyst SD-WAN Manager flaw to its Known Exploited Vulnerabilities catalog
Cisco Patches Exploited Catalyst SD-WAN Zero-Day Vulnerability
Bitget Confirms Third-Party Zero-Day Behind $387.5 Million Cryptocurrency Theft
WatchGuard fixes critical Fireware OS flaw allowing remote code execution
Government, Finance Orgs Targeted in Weeks-Long NetScaler Zero-Day Attacks
Russian FSB-linked hackers scale up phishing attacks against Ukraine supporters
Suspected state-sponsored hackers exploited NetScaler zero-day since early September (CVE-2026-88772)
Russian APT Star Blizzard Uses ‘RedFlick’ Infection Chain in Recent Attacks
U.S. CISA adds Apple Multiple Products flaw to its Known Exploited Vulnerabilities catalog
Apple Patches CoreGraphics Zero-Day Linked to Sophisticated Targeted Attacks
Apple squashes zero-day bug exploited in “extremely sophisticated” attack (CVE-2026-86950)
Apple Patches Meta-Reported Zero-Day Linked to ‘Extremely Sophisticated Attack’
Cybersecurity jobs available right now: September 29, 2026
Malicious ad-blocking extensions exploit Chrome Web Store trust
Cyberattack on Polish medical software provider exposes patient data
U.S. CISA adds Citrix NetScaler flaws to its Known Exploited Vulnerabilities catalog