Countercept Agent for Windows – 2026-09-11 – Sensor update

The update is related to the Countercept Agent’s Sensor component. The Sensor component gathers data to be analyzed in the WithSecure backend to identify any malicious activity. 

Product Name: Countercept Agent for Windows – Sensor Component

Version: 2026.3.49

Pilot Availability: 14/09/2026

General Availability: 21/09/2026

Predecessor: 2026.3.43

Release Purpose:

• Generic maintenance

Customer Action Required:

• The Operating System should be Azure Code Signing (ACS) compliant to receive this update. See 
  
  https://community.withsecure.com/en/kb/articles/29714-changes-in-support-on-microsoft-windows-minimum-patch-level
  
  
    for more details.

Name Changes:

• No changes to file, process, or service names.

Files Updated:

• fsatp.sys
• fsatpl.exe
• fsatpn.exe
• install.exe
• sensor_control.exe

New Features and Enhancements:

• N/A

General Maintenance:

• Security fixes and bug fixes

OS Support:

• Windows 10, 11
• Windows Server 2012, 2012 R2, 2016, 2019, 2022, 2025