Down Periscope Ok.ru [ Bonus Inside ]

I need to check if "down periscope ok.ru" is a known term or phrase within ok.ru's community. Maybe it's part of a game, a meme, or a specific user behavior. Also, considering the possibility that "down periscope" is a call to action for users to secure their accounts on ok.ru, such as enabling two-factor authentication, making their profiles private, etc.