ModSecurity 1.9 article on O'Reilly Network

My article ("What's New in ModSecurity"), which describes the most important improvements in 1.9, has just been published on O'Reilly Network. It covers the rule engine enhancements, real-time audit log aggregation facilities, and the stateful request monitoring features. It's a good read if you've been running 1.8.x and want to catch-up.

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