This document discusses implementing a web application firewall (WAF) using ModSecurity and the OWASP Core Rule Set (CRS) as part of a DevOps process. It recommends setting up the WAF using a Docker container for the CRS for fast feedback. This allows detecting attacks like SQL injection and cross-site scripting early before deployment, as well as reducing false positives by testing requested changes to the rule set. The goal is to integrate WAF testing into the development cycle to improve security.
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