What is the best method to prevent malware from reoccurring after it has already infected PCs and stolen credentials?

Using an antivirus with heuristic analysis is the best method to prevent malware from reoccurring after an infection has already occurred. Heuristic analysis enables the antivirus software to detect and block new and unknown malware variants by examining their behavior and characteristics rather than relying solely on known signatures of previously identified threats. This proactive approach allows the software to identify potential malware based on suspicious activity, which is particularly important after an existing infection that may have altered system settings or enabled the installation of additional malicious software.

This method is crucial in addressing threats that have evolved or adapted post-infection, as malicious actors often change their tactics to exploit vulnerabilities. By employing an antivirus with heuristic capabilities, organizations can strengthen their defenses against such evolving threats and minimize the chances of re-infection.

The other methods do have their merits, but they either do not directly address the reinfection aspect or may require supplementary measures. For instance, a host-based intrusion detection system can help identify malicious behavior but does not actively remove or neutralize malware. Disallowing password caching for administrators can enhance security for credential management, but it does not prevent malware from infiltrating systems in the first place. Similarly, installing a UTM (Unified Threat Management) device can monitor and filter traffic but may not effectively address malware