This question already has an answer here:
I just moved to a new apartment/room and I'm using my roommate's brother's Wi-Fi connection (almost 3 times faster and 3 times cheaper than if I would get my own Internet). He has access to the router.
How much information could the owner of a connection/router—if moderately knowledgable—access (i.e., check in the settings or actually hack) regarding...
- Online banking?
- Websites visited?
Can an owner of a connection/router—again, if moderately knowledgable—hack your computer and get access to your files?
If not, what would be the level of difficulty, when owning the router, be to get access to the above mentioned information/files?
What protection would make sure that everything mentioned above—banking info, websites visited, passwords and files—would almost be 100% unaccessible (when using someone elses Intenet connection, with his permission, and he has access to the router)?