Files can always be changed in a secret way.

How about some hide and seek?

I’ve gotten bored of handing out flags as text. Wouldn’t it be cool if they were an image instead?

The Network Operations Center (NOC) of your local institution picked up a suspicious file, they’re getting conflicting information on what type of file it is.

People keep trying to trick my players with imitation flags. I want to make sure they get the real thing!