Last week, more than 100 companies and organizations published an open letter calling for a rapid acceleration of cyber defense capabilities to combat the capabilities of AI. The list reads like a procurement catalog. Microsoft, Google, AWS, Cisco, IBM, CrowdStrike, Cloudflare, Anthropic, Okta and Fortinet are on it, alongside buyers like Mastercard, Visa and Capital One. The public signatory page has since passed 200 companies and organizations, with some such as 1Password, Sophos and Prophet Security, have already published posts of their own detailing their commitment to defenders.
The explanations are worth sitting with. Letters turn into marketing assets faster than they become company concrete action. The buyers decide which one becomes reality.
The diagnosis is correct
I want to be careful about how the skepticism below reads, because the letter has the substance right. It opens by arguing there is a limited window to strengthen defenses before AI-enabled attacks become widespread. There is data to back that up. CrowdStrike’s 2026 Threat Hunting Report, covering January through June 2026, found that 88 percent of the exploitation it observed against vulnerabilities with a public proof of concept occurred within 48 hours of that proof of concept being published. In the four days after the React2Shell disclosure, the same team logged more than 800 hunting leads across over 80 victim organizations.
Forty-eight hours is shorter than most change windows. Anyone who has sat through a Thursday patch approval meeting knows what that does to a quarterly remediation cycle.
The shrinking timeframe is real.