Challenges are not particularly malicious or dangerous, but they are vulnerable by design (that's the game!). Containers isolate them, but it's up to you to play safely.

After years of honored service the archive has been... archived.

You cannot spin up VMs on OOO's dime anymore but we still provide all other info, including how to run them on your laptop. If the archive's archive runs into issues you're still welcome to ping us at team@oooverflow.io