Thread:Project:Support desk/Upgraded to 1.23.5, massive spam

Hello, did the upgrade the other day, and since spam is out of control. I'm still using ConfirmEdit with QuestyCaptcha (site is http://www.speedsolving.com/wiki). What else can I add to stop all of these?

On a side note, like 40 spam bots today created accounts. How can I bulk block and remove them without each on manually?

Many thanks.