Notes on the hybrid war. Criminal gang hits travel and hospitality sectors. Additions to CISA's Known Exploited Vulnerabilities Catalog. CISA issues five ICS security advisories.

Killnet claims a DDoS campaign against Estonia. The head of GCHQ calls Russian cyber operations a failure. US Cyber Command concludes its "hunt forward" mission in cooperation with Croatia. A criminal gang targets the travel and hospitality sectors. Thomas Pace of NetRise shares insights on firmware vulnerabilities. Daniel Floyd from BlackCloak on Quantifying the Business Need for Digital Executive Protection. CISA issues five ICS security advisories.

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