[tptacek]

Ours will be up for awhile. Stripe's is time-limited. If you're interested in what Stripe's doing here, I'd do theirs first.

[aparadja]

Part of me wishes that you too would have a tight time limit. Your level 19 still keeps me up at night. It disturbs my work. It makes me slightly worse as a person.

[tptacek]

If you'd like us to lock you out, we can do that for you. :)

[voltagex_]

Apart from not being able to run the challenges on Firefox, the Matasano CTF has been great. Now, if only I could figure out level 2...

[antonyme]

Ah great, ok. I'm really enjoying them, and would really like to finish both!