Well it depends on what you mean by hacked. If your meaning identity theft then that depends on how active and WHERE you use your credit card/debit card. But if you mean a RAT(remote administrative tool) then you can be hacked out of the blue. FYI in order to be "RATed" you have to have the Trojan(type of virus) on your computer. Meaning you had to download it or any other way it got on your device. Now 80% of the time people get RATed is because their friend is pulling a prank on them. Now password cracking is a big one. The biggest way people get their passwords hacked is because A they have extremely easy passwords and B they use the same password for everything. Now I will get into "depth" on one way you can get your password cracked. So for example you love this gaming website and you want to create an account. So you type in your email, account name, and lastly your password. Let's just say you use the same password for everthing(let's hope you don't after this). Then a hacker come along, his approach isn't to steal passwords but to destroy the websites database. So he uses a tactic called SQL injection. (SQL is a databased programming language) anyway so this hacker stumbles apon usernames, passwords, and emails. So now he has your email and the password to your email.
Sorry if I didn't cover what you wanted me to.
Btw I'm 14