Greg over at Election Central:

I just got off the phone with top Joe Lieberman adviser Dan Gerstein, and he acknowledged to me that the Lieberman camp doesn't have any evidence that the Lamont campaign -- or Lamont supporters -- are behind the hack attack on the Lieberman campaign web site.

Asked if the Lieberman campaign had any idea who might be behind the attacks, Gerstein said: "We don't."

Gerstein said earlier, "Their supporters are doing these [attacks], we've demanded they get them to stop and they refuse to do it."

Lamont's campaign earlier denied any involvement in the attack.