Reviewing all applicable security group rules is the most direct method to determine if there are overly permissive or conflicting rules that are allowing unauthorized access. It is possible that a rule has been configured that unintentionally permits traffic from unauthorized sources, thus reviewing the rules can uncover such misconfigurations. The role of ACLs and inheritance is taken into account during this evaluation. Checking firewall settings alone would not necessarily identify issues specific to network security groups, and logging can help to trace issues but might not directly solve the misconfiguration. Additionally, while revising encryption methods is important for securing data in transit, it would not prevent unauthorized access if the security group rules are misconfigured.