Pstein

@pstein

Computer Freak, Graphics Designer, Loves surfing the web😁

Thomas A. Anderson

@xeo

I started «Power down» simply because of interest how it works.

steemfiles

@steemfiles

Download premium content for Steem Dollars

capture the flag

@ctf

@rmp

@cryptoriddler

Photography | Creating and solving of riddles | #photography #cryptoriddle #puzzle