T1593

Search Open Websites/Domains

PREnothing on this site yetT1593 on attack.mitre.org

Adversaries may search freely available websites and/or domains for information about victims that can be used during targeting. Information about victims may be available in various online sites, such as social media, new sites, or those hosting information about business operations such as hiring or requested/rewarded contracts. Adversaries may search in different online sites 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 Search Open Websites/Domains

Much of this activity may have a very high occurrence and associated false positive rate, as well as potentially taking place outside the visibility of the target organization, making detection difficult for defenders.

what reduces it

M1013 Application Developer Guidance. Application developers uploading to public code repositories should be careful to avoid publishing sensitive information such as credentials and API keys.
M1047 Audit. Scan public code repositories for exposed credentials or other sensitive information before making commits. Ensure that any leaked credentials are removed from the commit history, not just the current latest version of the code.

sub-techniques

T1593.001 Social Media · not covered yet
T1593.002 Search Engines · not covered yet
T1593.003 Code Repositories · 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.