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.

This is an undesirable program. This file has been identified as a program that is undesirable to have running on your computer. This consists of programs that are misleading, harmful, or undesirable.

Users of Kaspersky Anti-virus have reported the presence of a process named vssbridge64.exe as part of their package. The AO Kaspersky Lab said that the process is a part of the Anti-virus. It is ...