TeamViewer is a vulnerable app, it's best to not run it with admin privilege especially in an unsecured environment. It's best to not have it enabled unless actively using it. Any idea the protocol used for this file transfer - was it seeming to come from inside TV or do you have any other remote access enabled such as logmein or rdp? You can always look to see if you have any rogue processes running - egress such as 'nc'.
All in all, make sure your apps and operating system are fully patched (hardline the connection for patching), don't run any app or the OS with admin/root if you don't have actual admin work to do, close all ports and disable all services not necessary to do business. Also, if you have a netgear router, hit that motherfucker with hammer and toss that shit out.
I want the OS to have a permission where the app can do things when I have it closed. For 99% of the apps I use, I'd turn that off. I don't need them doing any shit in the background.
While it could open you up to some nefarious activity, it may not that in and of itself. You said you had copied code; any chance the code contained a redirect or a call that opened up a reverse shell? Did you scrub the code first? Does your IDE run sandboxed? Is it possible to run your IDE In a VM removed from your host OS - if your network connection is active and bridged in a VM, you could still be open to catch some shit.
I'm not the OP.
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