Q: sicherheit

Why do you think your Mac was hacked?

I'd recommend changing all your passwords and contacting your bank to find out who and when charged your account.

If you still fear that someone has installed malicious software on your Mac to steal your personal data, you can reinstall the operating system. However, if you've already changed all the passwords, I believe that's enough.

Also, never reveal your personal information and don't answer malicious emails sent from suspicious addresses. Never call phone numbers from popups and never click on ads and banners you see on the internet.

Below you will find some additional reading.

Identifying fraudulent "phishing" email - Apple Support

https://www.apple.com/legal/more-resources/phishing/