I am the co-founder and vice president of UMW's Linux Users Group. I mainly try to bring interesting people to come and talk about Linux and open source.
Cybersecurity - Capture the Flag
Capture the Flag (CTF) is a competition in where teams try to find flags by doing different types of cybersecurity type problems. This can include using the wayback machine, breaking a simple cryptosystem, as well as finding exploits in a sandboxed system.
I was part of a committee of four people making problems for UMW's first CTF competition.
If you're interested in this sort of thing and just starting out, one website that I found which is really cool is called OverTheWire.