This detection rule is designed to monitor and alert on modifications to the Windows registry entry "EnableWebContentEvaluation," specifically targeting the change that sets its value to "0x00000000". This change typically disables web content evaluation capabilities of Windows Defender, a critical security feature that helps protect users against malicious content that can lead to system exploitation. Utilizing data from Sysmon EventID 12 and 13 within the Endpoint.Registry datamodel, the rule captures any events associated with such a registry modification. Analysts should view this behavior with caution, as its occurrence may indicate an attempt by an adversary to bypass security mechanisms that safeguard against harmful web scripts. If identified as malicious, it could elevate the risk of security breaches and system vulnerabilities.