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The Collective Cyber Defense letter wrote your next vendor questionnaire
Op-ed argues the 200-company Collective Cyber Defense letter's three endorsed metrics should become standard vendor procurement questions.
More than 200 companies including Microsoft, Google, AWS, CrowdStrike, Anthropic and Okta signed an August 27 open letter calling for faster cyber defenses against AI-enabled attacks. The letter endorses three measurable metrics: coverage, containment speed, and verified remediation. The author turns those into five concrete procurement questions buyers should pose at vendor renewals, while noting the letter contains no deadlines, dollar figures or measurable targets.
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New CISO appointments 2026
Companies including Mistral AI, Trellix, Marriott, and ANZ appointed new CISOs in July-September 2026 amid high security-leadership turnover.
CSO Online's rolling column tracks senior security appointments, noting many companies are hiring a CSO/CISO for the first time. Notable moves include Thomas Coudray leaving Ledger to become Mistral AI's CISO, David Soto joining Trellix from Amazon, and Daniel Dubowski becoming Marriott International's SVP and CISO. Other appointments span ANZ, Gigamon, Axonius, Tricentis, Remitly, Allied Universal, and the State of California.
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100-plus companies call for ‘global surge’ in AI
OpenAI, Anthropic, Google, Microsoft, AWS and 100+ organizations sign open letter urging a 'global surge' in AI-powered cyber defenses.
More than 100 companies including OpenAI, Anthropic, Google, Microsoft, AWS, Capital One, Mastercard, CrowdStrike, Palo Alto Networks and Proofpoint signed an open letter published Thursday calling for accelerated cybersecurity defenses as AI capabilities advance. The letter argues a shrinking 'defenders' window' exists to fix accumulated weaknesses such as excessive permissions, misconfigurations and unpatched legacy systems before AI-enabled attacks grow more widespread. It asks governments to coordinate cross-border defense and fund protection of critical infrastructure, and asks frontier AI labs to provide model access, funding and support. It references a June US executive order creating the Gold Eagle AI threat-sharing clearinghouse.
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In most cities, nobody owns the whole network
Former Waco CIO argues cellular-connected water controllers sit outside scanned networks, and accountability plus operating-budget funding—not technology—block segmentation.
Writing as Waco, Texas's former CIO, the author describes July water-sector intrusions that CISA linked to over 100 compromised systems, typically controllers on public cellular links absent from asset lists. The FBI and EPA reported incidents at utilities in at least seven states since July 27, and a Clayton County, Georgia pump station failure triggered a boil-water advisory. He argues accountability and funding—using mechanisms like the Texas Water Development Board's new cybersecurity scoring criteria—are the binding constraints, citing Waco's 43-day segmentation of five treatment plants with operating funds.
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HiddenLayer nabs $100M as enterprises rush to secure their AI deployments
AI security startup HiddenLayer raised a $100 million Series B led by Delta-v Capital as enterprise spending on securing AI deployments accelerates.
HiddenLayer, which protects AI models, agents, and workflows from adversarial attacks, vulnerabilities, and code injections, raised a $100 million Series B led by Delta-v Capital with participation from Ten Eleven Ventures, Morgan Stanley, Microsoft's M12, and Booz Allen Hamilton. The company says annual recurring revenue grew more than 10x to the tens of millions of dollars, with customers including the Department of Defense, the intelligence community, and a frontier model provider with over 700 million weekly users. Gartner estimates enterprise spending on AI security products will reach $2.83 billion in 2026, up 83% from 2025, and nearly $4.78 billion next year.
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