It is possible however. Some camera's don't require switching on, they just need activating and it can be done remotely if the PC is unsecure / vulnerable. Don't think you will find anyone wiling to tell you how it is done though. Not on here anyway.
Yes , thedelbwa !
Marry them and set up a joint account. It works for me!
There's a way of transferring funds that is even faster than electronic banking. It's called marriage. If my husband reads this - only joking dear.
Of course you can defend against things you don't understand. Do you know how to write a computer virus or a piece of malicious spyware? Probably not. But you can buy software to prevent infections. Microsoft release regular security updates to patch against other possible security threats. Ensuring you have a decent firewall will also help prevent any unauthorised access to your pc and it's devices.