I am trying to use OSSEC with Alienvault to have some sort of file integrity monitoring. I have installed the ossec agent and I want to look for files containing credit card information. I found this link here detecting sensitive information but some problems that I ran into were the rules are stored on the AV server and I cannot modify them.
How can I use Ossec to look for credit card information? If I cannot use Ossec, will something else suffice to look for credit card information?