I was very glad to find out today that we reached 3,000 sites being monitored by http://sucuri.net. They are all being checked frequently for DNS, Whois and content changes, in addition to their blacklisting status on multiple databases.
So, if you want to stay in control of your Internet presence, try http://sucuri.net.
Web site and DNS integrity monitoring to detect unauthorized changes caused by malware, hackers, etc.
Hacking attempts? Domain in a blacklist database or stolen?
Instant notification via email, sms and twitter, showing exactly what is happening…