Maybe they can, but there is no official statement yet.
Below is the quote from the Tennessee paper. All Kernell is admitting is that his son is being investigated...NOT that his son is guilty. Let's not jump the gun on this one.
Quote from paper...
Kernell, a Memphis Democrat, confirmed that it is his 20-year-old son, David, who is being widely named on Internet blogs and chatrooms in connection with an unfolding story about Palin’s hacked e-mail accounts.
Okay but if I were a betting amphibian, I know where my money would be....:)