We spin up a new VPS for each target you deploy. Then we use IP tables to allow traffic to and from only the IP address you submit when creating the target.
We also destroy the target 1 hour from creation. You can increase this wait time up to 4 hours.
We can deploy targets to our own Hacker Lab owned servers at no cost to you. This is the default behavior. Or we can deploy targets to your own DigitalOcean or Linode account. You'll just need to authenticate your account from the "VPS" tab of the setting page.
You'll pay the hosting costs but you control it and can look under the hood.
You can contact me at firstname.lastname@example.org