. This change moved the antivirus scan process into its own service, independent of the main non-security service, to ensure continual protection even if the main service encounters issues. Broadcom Community Key Security & Performance Features AMSI Integration : This build introduced support for the Windows Antimalware Scan Interface (AMSI)
This build (14.3.558.xxxx) represents the release for version 14.3. It is a significant update that introduced support for Windows 10 updates and refined the "Exploit Protection" features. symantec endpoint protection 14.3 build 558
Even in 2026, how does SEP 14.3 Build 558 stack against modern AV like Microsoft Defender for Endpoint or CrowdStrike? It is a significant update that introduced support
Configuring Symantec Endpoint Protection to Communicate ... - IBM - IBM A standout feature of this specific
A standout feature of this specific build is the integration of the . This allows third-party application developers to request real-time scans of dynamic script-based malware, such as PowerShell, JavaScript, and VBScript , before they are executed. If the Symantec client identifies malicious behavior during the AMSI call, it triggers an "Access Denied" verdict and stops the script from running. Key Features of Build 14.3.558.0000
For organizations managing air-gapped networks (military, finance, industrial control), Build 558 added a "Siloed Migration Mode." This allows the SylinkDrop tool to update policies without requiring a full uninstall/reinstall when moving from SEP 12.1.x to 14.3.