Thanks to my stupidity and crypto miners, I just lost $500. Someone hacked my Amazon AWS account and created a lot of EC2 Instances and Lambdas that were mining crypto. Yeah, I admit, it was my fault I forgot to set up MFA for the AWS account, but if not for those abusive crypto miners, we would not have this situation at all! So my advice: always take care of your passwords and set up MFA whenever possible!