It appears that the wikis.ala.org suffered from a hacker attack of some sort. The exact methodology is not yet clear, but the miscreants placed links to an attack in the .ru (Russia) domain into various files. I believe i have removed all of the offending links, and have asked Google to review the domain. Until then, you will get a browser security warning when attempting to reach any of the wikis hosted at wikis.ala.org.
This is a good time to remind everyone of how vital it is to monitor any wikis you have running. Letting a wiki go unwatched for a long period of time is a formula for this sort of trouble. We are fortunate that this is the first time a spam or hack attempt has triggered this sort of warning from Google. Extra vigilance is called for. Also, let me know if you have a wiki that needs to be retired, so I can erase it permanently and remove one more potential attack point.