Cyber Berkut makes an outrageous claim...

via Cyber Berkut website.

We, CyberBerkut, have received a file which value cannot be overestimated in the order!
Expensive senator McCain! We recommend to you next time in foreign trips, and especially for territory of Ukraine, not to take with themselves confidential documents.
On one of devices of your colleagues we have found a lot of the interesting. We have decided to lay out Something: given video should become property of world community!

Here.

Question.  Who are these Ukrainians?  What is the goal?  Are they on anyone's radar?

Finally, does anyone know why they would make this claim?  What could they hope to achieve with this bit of craziness?

NOTE:  OK, This Ukraine thing just went sideways to me.  We're dealing with a land of mirrors where up is down and vice versa.  I need to chew on how this blog deals with news of the war from here on out.