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Why no single control is enough
No single control stops every attack. Defense in depth stacks independent layers so that if one fails, the next contains the threat. Here's how the pieces fit — and what the acronyms really mean.
The acronyms, decoded
| Term | What it does |
|---|---|
| AV (Antivirus) | Signature-based blocking of known malware. |
| EDR (Endpoint Detection & Response) | Behavioral detection + investigation & rollback on endpoints. |
| XDR (Extended DR) | Correlates endpoint, email, identity & network signals. |
| SIEM | Central log collection & correlation across everything. |
| MDR / SOC | Humans (24/7) triaging and responding to alerts. |
| NDR | Detects malicious activity in network traffic. |
Why you need more than antivirus
Modern attacks are "living off the land" — using legitimate tools, not obvious malware. AV alone misses them. EDR spots the behavior; SIEM connects the dots across systems; a SOC turns alerts into action.
Layer-by-layer
- Perimeter: next-gen firewall, IDS/IPS, VPN.
- Network: segmentation, NDR, secured Wi-Fi.
- Endpoint: EDR/XDR, managed AV, patching.
- Identity: MFA, Conditional Access, MDM.
- Data: encryption, DLP, M365 backup.
IDENETY COMPLETE bundles EDR/XDR, managed AV, and SIEM monitoring (Adlumin), adding network detection & response and vulnerability scanning for a full stack — with executive risk reporting on top. See COMPLETE plan details.