3 ms·
on level 4 try: https://xss-game.appspot.com/level4/frame?timer=%99 https://xss-game.appspot.com/level4/frame?timer=%99 and you get: 500 internal server error L
by Keloo 10y ago
on level 4 try: https://xss-game.appspot.com/level4/frame?timer=%99 https://xss-game.appspot.com/level4/frame?timer=%99
and you get: 500 internal server error LOL