Hackers exploit SharePoint bypass, Snowflake hacker's threats to researcher backfire, CISA warns schools
CISA's Back-to-School Cyber Playbook, SharePoint Auth Bypass Exploited, and Major Ransomware & Cybercrime Arrests
As students return to class, CISA released two free cybersecurity guides for K–12 leaders with limited budgets, emphasizing MFA, device protection, tested backups, and incident response planning amid shrinking federal support and ongoing school ransomware risk.
Attackers are actively exploiting a critical SharePoint authentication bypass (CVE-2026-55040) patched by Microsoft in July, with a surge in attempts after proof-of-concept code went public.
Ransomware hit Colombia's…
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