When detections are disabled for a host, the CrowdStrike Falcon cloud stops processing telemetry from that sensor to generate new detection alerts. This is often done for maintenance or troubleshooting. Upon clicking "Enable Detections," the cloud resumes the real-time processing of new telemetry from that host. This action is not retroactive. Any malicious or suspicious activity that occurred while detections were disabled will not be processed to create historical alerts in the console. The flow of detections begins only from the moment they are re-enabled.

A. This action enables all detections for the host as governed by its assigned policies, not just custom detections (IOAs).
B. Detections that would have been generated during the disabled period are not stored and retroactively restored; that data is effectively unprocessed for detection purposes.
D. Enabling detections is a separate action from enabling preventions. Preventions are managed via the host's assigned Prevention Policy and are not directly toggled by this specific action.

1. CrowdStrike Falcon Documentation. Host and Host Group Management Guide. The section on "Host Management Actions" describes the functionality for enabling or disabling detections. It specifies that these actions affect the generation of new detections and does not include a mechanism for restoring detections from a period when they were disabled. The system operates on a real-time data processing model.

2. University of California, Berkeley. CS 161: Computer Security, Lecture 18: Intrusion Detection. Course materials explain that real-time Network and Host-based Intrusion Detection Systems (NIDS/HIDS) like an EDR platform process event streams as they arrive. Disabling or muting a source stops this processing. Re-enabling it resumes the process for subsequent events, as reprocessing historical raw telemetry is computationally prohibitive and operationally complex. (Reference principle from general IDS/EDR architecture taught in university curricula).