An attacker gains access to a sensitive shared folder. What might a security engineer configure to directly mitigate the problem?

Adjusting Access Control List (ACL) rules is an effective way to directly mitigate the problem of an attacker gaining access to a sensitive shared folder. ACLs are critical for defining who has permissions to access, modify, or execute files and directories within a system. By configuring these rules, a security engineer can limit access to only authorized users and roles, thereby restricting the attacker's ability to exploit the shared folder.

When ACLs are properly configured, they can prevent unauthorized users from even seeing the folder or its contents. This proactive measure not only frustrates potential attacks but also minimizes the risk of sensitive information being exploited.

While endpoint protection is essential for general security, and IDS can alert administrators about potential breaches, neither of these directly addresses the immediate access control concerns of a specific shared folder. Moreover, deploying a script could help automate tasks or monitor access, but it does not inherently secure the folder itself against unauthorized access.

Thus, adjusting ACL rules specifically targets the root of the problem by managing permissions effectively, making it the optimal solution in this scenario.