Attacker artifacts are files, logs, scripts, and other data recovered from adversary infrastructure that help investigators reconstruct part of an intrusion. They may include web shells, malware builders, command lists, exfiltration staging folders, credential caches, screenshots, or chat transcripts used during operations.
These artifacts matter because they can reveal tooling, targets, timestamps, and operator habits, which helps defenders map an attack chain and improve detection. They are often found on compromised servers, cloud storage, rented hosts, or abandoned malware infrastructure. In practice, analysts use them to correlate incidents, extract indicators of compromise, and understand what an attacker prepared to steal or execute. They are useful evidence, but not perfect proof: a recovered file may show intent or staging without proving successful access to every system. Good incident response treats attacker artifacts as one source of evidence alongside logs, endpoint telemetry, and network traces.