With the type of work I'm in I often find myself working with the disadvantaged and homeless and late yesterday a situation arose whereby two young men needed assistance with their internet banking and circumstances dictated we use my personal computer as opposed to an office one. I watched all of their activity, ensured they never left the banking page. Afterward I pulled what information I could from one of their records and they had been charged with crimes relating to personal data theft and I've found my computer to lag since and my laptop was showing as being connected to my work or home network but also an unidentified public network. I disabled and re-enabled the Wi-Fi on my computer and it went away but had been consistent over multiple networks until then. Under what circumstances does this "unidentified network" normally appear and if there's a risk to my computer what should my next steps be?