Hack The Box Working group meet every other week online and/or in person to work on various challenges at https://hackthebox.eu. Attendees will pick a machine to go after at the beginning of the evening and work together to hack into it. Please follow all rules listed here: https://www.hackthebox.eu/home/rules.
Please join us here: https://discord.gg/Rt3Wahdd
Meetup Group: https://www.meetup.com/hack-the-box-meetup-baltimore/