Abstract: A computing device can install and execute a security agent that interacts with a remote security system as part of a detection loop aimed at detecting malicious attacks. The remote security system can receive observed activity patterns from the security agents associated with the computing devices. The remote security system can filter the observed activity patterns to identify “interesting” activity patterns, or activity patterns presenting indications of an attack, including any cross-machine activity. If a first host device is flagged for further threat analysis based on its filtered activity patterns, and at least one of the filtered activity patterns includes remotely accessing a second host device, then the second host device may also be flagged for further threat analysis.

Abstract: A computing device can install and execute a security agent that interacts with a remote security system as part of a detection loop aimed at detecting malicious attacks. The remote security system can receive observed activity patterns from the security agents associated with the computing devices. The remote security system can filter the observed activity patterns to identify “interesting” activity patterns, or activity patterns presenting indications of an attack, including any cross-machine activity. If a first host device is flagged for further threat analysis based on its filtered activity patterns, and at least one of the filtered activity patterns includes remotely accessing a second host device, then the second host device may also be flagged for further threat analysis.