T1595

Active Scanning

PREnothing on this site yetT1595 on attack.mitre.org

Adversaries may execute active reconnaissance scans to gather information that can be used during targeting. Active scans are those where the adversary probes victim infrastructure via network traffic, as opposed to other forms of reconnaissance that do not involve direct interaction. Adversaries may perform different forms of active scanning depending on what information they seek to gather.
MITRE ATT&CK 19.2, retrieved 2026-09-12

how MITRE says to see it

Detection of Active Scanning

Monitor network data for uncommon data flows. Processes utilizing the network that do not normally have network communication or have never been seen before are suspicious.

what reduces it

M1056 Pre-compromise. This technique cannot be easily mitigated with preventive controls since it is based on behaviors performed outside of the scope of enterprise defenses and controls. Efforts should focus on minimizing the amount and sensitivity of data available to external parties.

sub-techniques

T1595.001 Scanning IP Blocks · not covered yet
T1595.002 Vulnerability Scanning · not covered yet
T1595.003 Wordlist Scanning · not covered yet

The description, detection analytics and mitigations are reproduced from MITRE ATT&CK, version 19.2, under its terms of use. The checklists, hunts, labs and everything else linked here are this site’s.