CSO Shield
AI security for security leaders — from zero to expert
Plain-language concepts, a learn path, a posture check, tabletop exercises, industry playbooks and a weekly AI security briefing. Built for CSOs, CISOs and security teams — no AI background needed.
Where are you starting from?
Pick the closest match — it sets your path through the lessons. You can change it any time.
Threat of the week
The first weekly AI Security Briefing is being prepared. The threat of the week appears here when it is published.
This week’s headlines
Briefing →Headlines from the weekly briefing land here every Monday once an editor has approved them.
Key numbers (with sources)
1 in 4
malicious breaches were AI-enabled — a 56% increase over the previous year
$6M
average cost of an AI-enabled breach (global average breach: $4.99M)
20%+
of organizations reported a breach targeting AI models or applications
~$2M
lower breach costs, on average, for companies using AI and automation in security operations
80–90%
of a state-sponsored espionage campaign's work was done by an AI agent, per the company that disrupted it
$670K
higher average breach cost for organizations with high levels of shadow AI (2025 study)