At least as long as the defense isn't reversed: It's your account. You are responsible for what happens in your name.*

IT security practices would get better very fast if that was the case.

* If you think your account was hacked then report it and it can be checked.

Is deniability really good for public offices? Politicians surely need some degree confidentiality on certain documents and communications, but they also need be held accountable for their actions (while in office).