Memory Exploit Mitigation in Symantec Endpoint Protection (SEP) works by injecting a DLL (Dynamic Link Library) --- specifically, IPSEng32.dll for 32-bit processes or IPSEng64.dll for 64-bit processes --- into applications that require protection. Here's how it works:

DLL Injection:

When Memory Exploit Mitigation is enabled, SEP injects IPSEng DLLs into processes that it monitors for potential exploit attempts.

This injection allows SEP to monitor the behavior of the process at a low level, enabling it to detect exploit attempts on protected applications.

Exploit Detection and Response:

If an exploit attempt is detected within a protected process, SEP will terminate the process immediately. This termination prevents malicious code from running, stopping potential exploit actions from completing.

Why This Approach is Effective:

By terminating the process upon exploit detection, SEP prevents any code injected or manipulated by an exploit from executing. This proactive approach effectively stops many types of memory-based attacks, such as buffer overflows, before they can harm the system.

Clarification on Other Options:

Option B (UMEngx86.dll) pertains to user-mode protection, which isn't used for Memory Exploit Mitigation.

Option C (sysfer.dll) is involved in file system driver activities, not direct exploit prevention.

Option D is partially correct about IPSEng32.dll but inaccurately specifies that it's for browser processes only; the DLL is used for multiple types of processes.