The Antimalware Service Executable, also known as MsMpEng.exe, is a critical component of Windows Defender that runs in the background to protect your system from malware and other security threats.

What is the Antimalware Service Executable process? The Antimalware Service Executable (its file name is MsMpEng.exe) process is Microsoft Defender's background tool that is responsible for scanning ...

I just noticed on my mom's computer that some "MsMpEng.exe" process (labeled "Antimalware Service Executable" and located under "C Program Files\Microsoft Security Client\") is consuming 100% of CPU.