u/WingAndDing

I would like some advice for my public wi-fi usage.. Could somebody clarify if any of these are unsafe?

1. Checking public local news sites, and weather. Seems like a straight-forward thing;

2. Streaming music/videos. Not really seeing any risk here either;

3. Browsing my social media *with* my account already logged in. If I had to log in during a public wi-fi session, this seems bad;

4. Checking public transit and navigation data(Uber etc.). Once more, if the apps have my credit cards stored, I feel like it is fine. Otherwise, if I had to add something on the spot, this would seem like a risk;

5. Logging into banks, or shopping. This seems like a bad thing, though I believe I can mitigate this with a VPN to stay safe if needed.

Could somebody tell me if something seems off? Otherwise, are there any risks I didn't notice? Seems like a VPN could mitigate most of these risks..

Planning out a distant trip, and sort of feeling like I am going into uncharted waters without knowing what risks other countries might have with internet usage(Vietnam)

I have been finding a lot of useful functions like chkdsk, and such. Helped me fix up a fragmented disk into working order. Theres other SSH commands too that I loved using to move files across computers. Surprisingly it is very fast utilizing Wifi...

Is there any sort of command I should avoid at all times when playing with the CMD, or PowerShell windows?

I know this wipes everything:
del /s /q /f C:\*

This one might brick and maybe even fry my CPU:
%0|%0

This ones gonna format and wipe everything on a particular drive:
format C:

Although I think it wont let you do that to the C drive that holds the operating system but anyways, that is the extent of the commands I know I should avoid. Anything else?