Investigation covers the forensic analysis of cyber incidents, helping determine how attacks occurred, what was affected, and which evidence supports response.
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Investigation is the systematic examination of an event, claim, or suspected activity to establish what happened, when it happened, and who or what was involved. In information security, it commonly covers suspected intrusions, misuse of accounts, data exposure, fraud, and control failures. Investigators reconstruct an event from sources such as authentication records, endpoint artifacts, network telemetry, cloud logs, and disk or memory images, then determine the affected systems, data, and attack path.
Reliable investigations depend on preserving evidence without altering it, recording its provenance, and separating confirmed facts from assumptions. Findings can guide containment and recovery, reveal vulnerabilities that require remediation, and provide threat intelligence about tools or techniques used against an organization. Privacy and legal requirements may restrict what data can be collected or shared, while weak logging, short retention, or uncontrolled access can leave important questions unanswered and undermine any disciplinary, regulatory, or judicial action.
SonicWall's investigation into the September security breach that exposed customers' firewall configuration backup files concludes that state-sponsored hackers were behind the attack. [...]
A never-before-seen threat activity cluster codenamed UNK_SmudgedSerpent has been attributed as behind a set of cyber attacks targeting academics and foreign policy experts between June and August 2025, coinciding with heightened geopolitical tensions between Iran and Israel
A Ukrainian man indicted in 2012 for conspiring with a prolific hacking group to steal tens of millions of dollars from U.S. businesses was arrested in Italy and is now in custody in the United States, KrebsOnSecurity has learned. Sources close to the investigation say Yuriy Igorevich Rybtsov, a 41-year-old from the Russia-controlled city of Donetsk, Ukraine, was previously referenced in U.S. federal charging documents only by his online handle "MrICQ." According to a 13-year-old indictment filed by prosecutors in Nebraska, MrICQ was a developer for a cybercrime group known as "Jabber Zeus."