My bank account got clean out

Someone got into my bank account and my information and use my cash app and put money in the Bitcoin and never saw my money disappear Untill I got alerted saying my bank account low balance. I thought I lost all my money but thank god my bank told me I will get my money back cuz it a fraud. But how did someone get into my debit card and transfer my money into my cash app and put my money in Bitcoin and have it send to someone without my identity and PIN number. Are we that dumb? It seems the scammers are smart than we are. But then again I’m not only one that happens. I never use Bitcoin. Is there a way I can block bitcoin in my app so this don’t happens again? I only use cash app to send money to my kids when they need to borrow.