Catalogue
ATT&CK

Detection catalogue

Explore published rules with transparent provenance, licensing, and ATT&CK mappings.

detections

Search detections

Filters

Loading detections…

Loading detections

The public catalogue of detection rules. Every entry carries its source, the identifier it had there, its licence and its ATT&CK mapping.

Product

Catalogue ATT&CK Create a workspace

Trust

Security Privacy Licences Terms

Contact

Report a vulnerability Report a content issue contacto@detections.app

MediumΣSigmaHQ

Denied Access To Remote Desktop

This event is generated when an authenticated user who is not allowed to log on remotely attempts to connect to this computer through Remote Desktop. Often, this event can be generated by attackers when searching for available windows servers in the network.

ATT&CK coverage

Lateral Movement

T1021Remote Services
- T1021.001Remote Desktop Protocol 50 detections cover this technique

Detection requirements

Log source product: windows
Log source service: security

Detection logic

Published to signed-in readers

The query as its source wrote it, its canonical form, and the content hash that pins this exact revision.

Provenance

Where this detection came from, and what you may do with it.

At source: Open at source
Written by: Pushkarev Dmitry
Licence: Detection Rule License 1.1Read the licence
Published: Aug 26, 2026
Version: 1