What are EDR and MDR tools?

EDR (Endpoint Detection and Response) monitors endpoints for threats: detecting malicious behavior, investigating incidents, and enabling response. When email-delivered malware executes, EDR can detect and contain it.

MDR (Managed Detection and Response) adds human expertise: security analysts monitoring EDR output, investigating alerts, and coordinating response. MDR services provide expertise organizations lack internally.

Email security relevance: EDR/MDR provide defense-in-depth when email security misses threats. They catch malware that bypasses email filters, detect post-compromise activity, and enable investigation of email-originated incidents.