I was at a code jam today for 12 hours. At the end of the day as I was leaving, one of the programmers claimed his computer was hit with a reverse shell attack. He was voicing this as I was finishing up and I stuck around to get as many details as possible. He was on a Linux system. This codejam was labeled a "hackathon" but in reality it was just a programming event, with $10k in cash prizes on the line. Now I'm worried that I'm at risk.
I was running a Django project server on my Windows 10 machine periodically throughout the day. When the accusations of real, actual hacking were heard it turned into a murder mystery. I turned on my VPN but I have no idea if that would actually do anything. Is my computer safe? Do I have to nuke it from orbit? Excuse my naiveté, but I don't think anybody at the event saw my team as a serious threat or competition. How can I check my machine to see if there are any signs of intruder? I don't have a shell log to read.
How do I check to see if my Windows 10 machine was compromised in the time that I was on a network where other machines where allegedly compromised?