Vectors for hacking your data:
Weak passwords. Fix that, especially for financial accounts.
Database breaches. Give corporations as little data as you can.
Social engineering. Assume anyone asking for info or sending "helpful links" is fraudulent. Trust is earned, not given.
Sometimes people don't talk enough about how to protect your accounts. I would say, get an open source password manager like KeepKey or AndroKeep.
My pet hate is links in emails. I mean, how hard could it be for email clients to show the actual address it's going to, and make it so you have to copy & paste, not click. I especially hate companies like Fedex that send payment links by email, leaving me always wondering if it's spoofed, or really from them and I'll get penalised for not paying something that really is due (but no human contact number to check, of course).
If you hover your mouse over a hyperlink, you see where it really leads in a popup or at the bottom left of a browser. Links can be opened in private/incognito mode via right-click menu. I always recommend just opening the site in a new tab and accessing your account directly.
These are the three major ways to avoid being hacked.
I hate giving corporations my data, not even my Name. I prefer to use a fake name and a fake DOB when signing up for some certain things.
And it helps to have a burner e-mail account for anything requiring one to sign up. Or better yet, one of the sites that generates disposable addresses sometimes.