I too was hit by the same "attack" and when I attempted to tell Yahoo they had a problem, they gave me a ration and implied I did everything from beating my dog (which I don't have) to going to Starbucks and passing out my password to the world. Joking aside, Yahoo would not admit they had been compromised and told me I had been careless with my password. At the time, I only had a desktop, no children at home and I was the only user.