Already there when I started to hack, it is nowadays gone and will never come back.
This platform was once among the bests, providing an early hacking contest and
amazing tasks to solve without a rest.

Show me your abilities by telling me what this platform is.
But don't yell it here, just whisper it to my ear,
show me what it did look like, show me what I did look
like at this time, and the black badge will no longer be mine.