“You Have Been Locked”: A Study of Fake FBI Warning Screen Pranks as Digital Folk Humor and Social Engineering

Content related to this query generally exists in three forms:

Browser-Based Pranks: These utilize the Fullscreen API in HTML5. Once activated, the browser hides the address bar and user interface (UI), making the operating system desktop invisible.

Ransomware-Based Locks: These inject code into the Windows Registry or Master Boot Record (MBR) to disable Task Manager and essential system utilities, ensuring the lock screen loads immediately upon boot.

Cybercriminals often use "prank" search terms as social engineering lures.

Before you run off to scare your little brother, we need to talk about the legal and ethical red flags. The search term includes "prank," but some people have taken this too far.

Do NOT do the following:

The Golden Rule: The victim must be able to close the screen by pressing Alt+F4 or Ctrl+Alt+Del. If they cannot exit the screen without rebooting, you have damaged their trust (and possibly their work).

The prank exploits: