ConvertTo-SecureString Cmdlet Usage Via CommandLine

This rule detects the usage of the 'ConvertTo-SecureString' cmdlet via the command line. This cmdlet is used to convert plain text into a secure string object, which can then be used to store sensitive information like passwords. While it has legitimate uses, its direct invocation from the command line is uncommon in typical user activity and can indicate suspicious behavior, potentially related to credential manipulation or obfuscation techniques by adversaries.