Companies

US public companies that told the SEC about a material cybersecurity incident (Form 8-K, Item 1.05), newest first. A marker shows when the same company, matched by exact name or website, was also posted on a ransomware leak site or is in the public breach list: claimed versus disclosed.

Source: SEC EDGAR full-text search (public domain). Leak-site claims are unverified posts by criminal groups; a marker only means the normalized names (or website names) are identical. See Sources.