Miller emphasizes the necessity of CISA 15 to combat rising cyber threats and enhance security.

FBI Cyber Division leaders described Operation Winter Shield, a 60-day campaign that turns investigative findings into tactical guidance for industry. They urged companies to inventory edge devices, include law enforcement in incident plans, and share indicators via IC3 and CISA advisories.

Kristen Grimes of the FBI cyber law unit described how the Cybersecurity Information Sharing Act of 2015 (CISA 2015) shields shared indicators and defensive measures and outlined alternative protections — FOIA exemptions, antitrust guidance and law‑enforcement processes — that remain if the statute lapses.

Ranking member Thanadar and other members urged a multi‑year reauthorization of the Cybersecurity Information Sharing Act of 2015, arguing long‑term authority is needed to sustain sector‑specific intelligence sharing as AI accelerates adversary capabilities; witnesses endorsed stronger sharing channels and ISAC coordination.