Spammed

My blog got spammed last night. Is that what it's called? I caught it at about 200 bogus comments. I quickly changed settings on who is allowed to comment and that seemed to stop it. They were posting the same advert for shoes on random posts at a rate about one per second. I changed some passwords and set up comment moderation. Not sure how they could get through the word verification without a human. Until I know more, I'm sorry for the moderation that awaits your comments.