At night, you receive a notification on your phone from an application that you have never had installed. When you try to open it, your phone gives an error that there is simply no such application.

After a couple of days, you notice that your phone lights up by itself. Picking up the phone, you see a new message in the chat from the user "Anonymous".

"You should change your passwords, and do not go to suspicious links. Should I give you a cyber security course, baby?"