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ATT&CK techniqueReconnaissance

T1595 Active Scanning

ReconnaissanceEnterprise

As of 2026-10-05, T1595 (Active Scanning) appears in 340 tracked threats, first reported 2026-01-25 and most recently 2026-09-26, with linked actors including Static Tundra, FSB Center 16, INC Ransom; it most often appears alongside T1190 (Exploit Public-Facing Application).

Tracked threats
340209 critical, 104 high, 24 medium
First seen
2026-01-25
Last seen
2026-09-26
Threat actors
51In the threats using it
Detection rules
194Blue tier and above

Data as of:

Activity timeline

T1595 first appeared in tracked threats on and was most recently reported on . The busiest month was 2026-07 with 137 reports, and 340 of the 340 threats were reported in the twelve months to 2026-09.

How adversaries use it

T1595 Active Scanning is catalogued by MITRE ATT&CK under the Reconnaissance tactic in the Enterprise matrix. Threadlinqs maps 340 of 2623 tracked threats (13%) to it; by severity that is 209 critical, 104 high, 24 medium.

Threats that use T1595 most often also use T1190 Exploit Public-Facing Application (322 threats), T1059 Command and Scripting Interpreter (225 threats), T1005 Data from Local System (169 threats), T1078 Valid Accounts (169 threats), T1068 Exploitation for Privilege Escalation (166 threats). These are the techniques an intrusion set tends to chain with it, so they are the natural next places to look when it is observed.

51 tracked threat actors appear in the threats that use T1595; the most frequent are Static Tundra (5), FSB Center 16 (4), INC Ransom (4), INC Ransom - G1032 (4), Cl0p (3).

Mitigations

MITRE ATT&CK lists 1 mitigation for T1595.

Data sources

Telemetry that can reveal T1595, per MITRE ATT&CK.

  • Network Traffic — Network Traffic Content, Network Traffic Flow

Threat actors using it

Tracked threats

The 30 most recent of 340 tracked threats that use T1595.

Detection coverage

Threadlinqs maintains 194 detection rules mapped to T1595 (SPL 64, KQL 59, Sigma 71). Rule content is available to Blue tier accounts and above; this page shows counts only.

194 detection rules (SPL/KQL/Sigma) · Blue and above. Compare plans

Sub-techniques