↳ GitHub sourceAnalytics ruleMedium
ProofpointPOD - Possible data exfiltration to private email
Description
'Detects when sender sent email to the non-corporate domain and recipient's username is the same as sender's username.'
- Rule type
- Scheduled
- Version
- 1.0.1
- Declared status
- Available
- Query frequency
- 10m
- Query period
- 10m
- Trigger
- gt 0
Declared MITRE coverage
Declared sources
Metadata from the source file. No dependencies inferred from KQL.
Connectors
Data types
KQL query
Original query, unchanged.
let lbtime = 10m;
ProofpointPOD
| where TimeGenerated > ago(lbtime)
| where EventType == 'message'
| where NetworkDirection == 'outbound'
| where array_length(todynamic(DstUserUpn)) == 1
| extend sender = extract(@'\A(.*?)@', 1, SrcUserUpn)
| extend sender_domain = extract(@'@(.*)$', 1, SrcUserUpn)
| extend recipient = extract(@'\A(.*?)@', 1, tostring(todynamic(DstUserUpn)[0]))
| extend recipient_domain = extract(@'@(.*)$', 1, tostring(todynamic(DstUserUpn)[0]))
| where sender =~ recipient
| where sender_domain != recipient_domain
| project SrcUserUpn, DstUserUpn
| extend AccountCustomEntity = SrcUserUpn
Declared entities
Related content
Links established from declared identifiers and solution manifests.
Source provenance
GitHubDisplayed values come from files in Azure/Azure-Sentinel. They describe the published template, not your workspace configuration.
- Commit
9800e51↗- Source identifier
aedc5b33-2d7c-42cb-a692-f25ef637cbb1
Additional source files 3
Solutions/Proofpoint On demand(POD) Email Security/Analytic Rules/ProofpointPODDataExfiltrationToPrivateEmail.yamlsource ↗Detections/ProofpointPOD/ProofpointPODDataExfiltrationToPrivateEmail.yamlmigration-note ↗Solutions/Proofpoint On demand(POD) Email Security/Data/Solution_ProofPointPOD.jsonsolution-membership ↗GSTEP / CATALOG TRACKING
Added to catalog : 16 Sept 2026 · 05:49 UTC
Last change observed : 16 Sept 2026 · 05:49 UTC