This plugin has been discontinued. It has been incorporated (and much improved) by the Sucuri WordPress Security Plugin: http://sucuri.net/wordpress-security-monitoring

You can download the Sucuri plugin here or just download directly with them.

WPsyslog2 is a global log plugin for WordPress. It keeps track of all system events and log them to syslog. It tracks events such as new posts, new profiles, new users, failed logins, logins, logouts, etc.

If you have any questions, contact us a ossecproject @ gmail.com.