Insider Threat Detection for SMBs
UEBA and insider threat detection aren't just for enterprises. Here's how MSPs can identify risky insider behavior at SMB scale.
Insider threats account for 25-30% of all data breaches, yet most SMB security programs focus exclusively on external threats. The insider who copies the client database before leaving the company, the compromised employee account being used for data exfiltration, the disgruntled admin who changes passwords — these are real risks that require monitoring.
User and Entity Behavior Analytics (UEBA)
UEBA establishes a baseline of normal behavior for each user and entity (device, application, service account) and alerts when behavior deviates significantly from that baseline. This catches insider threats that rule-based detection misses because the actions themselves are legitimate — it's the pattern that's suspicious.
Examples of UEBA detections:
- A user who normally accesses 50 files per day suddenly accesses 5,000 (possible data exfiltration)
- A user logging in at 3 AM when they normally work 9-5 (compromised account or unusual activity)
- A user accessing systems they've never accessed before (lateral movement or snooping)
- A service account making API calls from a new IP address (potential credential theft)
- An admin creating new accounts or changing permissions without a corresponding ticket (unauthorized access provisioning)
Practical Implementation
Full UEBA requires significant data: authentication logs, file access logs, email activity, cloud service usage, and endpoint telemetry. This is another area where a unified platform has a massive advantage — all this data already lives in one place (SIEM + RMM + email security + cloud posture), so building user behavior profiles doesn't require additional data collection.
Responding to Insider Threat Alerts
Insider threat investigations are sensitive. Unlike external threats where you can aggressively contain, insider investigations often require: discreet monitoring (don't tip off the subject), HR and legal involvement (especially before any employee action), preservation of evidence (in case of termination or legal proceedings), and careful escalation (involve only those with a need to know).
For MSPs, insider threat detection for clients should include: monitoring for data exfiltration by departing employees, alerting on unusual admin account usage, detecting unauthorized data access, and flagging abnormal remote access patterns. These are high-value services that differentiate your offering from commodity MSP services.