Fact-checking is the process of verifying a claim against reliable evidence before it is published or acted on. In practice, that means comparing statements with primary sources, trusted records, logs, screenshots, metadata, and independent reporting. The goal is to separate confirmed information from rumor, speculation, or manipulation.
In cyber security, fact-checking matters because attackers often rely on false narratives: phishing messages may mimic trusted brands, fake alerts can push users to install malware, and doctored images or copied posts can distort threat intelligence. Security teams also use fact-checking to validate indicators, confirm incident timelines, and avoid reacting to misleading claims. For journalists and investigators, strong fact-checking protects both credibility and operational security by reducing the risk of publishing unverified material that could expose sources, systems, or defenses.