Sheldon Getting started with the bender for 10 points, 12 months ago

Sheldon Discovered a web service on nopal for 100 points, 17 months ago

Sheldon managed to headshot [tutorial-101], 17 months ago

Sheldon Is on the 2nd step of the echoCTF Tutorial 101, got beefdead flag tutorial-101 for 1 points, 17 months ago

Sheldon managed to complete the challenge [echoCTF Tutorial 101], 17 months ago

Sheldon Answered the question of echoCTF Tutorial 101 [Lets get the remaining flags and get our first headshot] for 10 points, 17 months ago

Sheldon Is almost done with the echoCTF Tutorial 101, got SHADOW flag tutorial-101 for 10 points, 17 months ago

Sheldon Is almost done with the echoCTF Tutorial 101, got GECOS flag tutorial-101 for 10 points, 17 months ago

Sheldon Answered the question of echoCTF Tutorial 101 [Lets check the second service and see what it does] for 10 points, 17 months ago

Sheldon Is on the 5th step of the echoCTF Tutorial 101, got ROOT flag on tutorial-101 for 1 points, 17 months ago