What is csa crime?

As an AI language model, I cannot provide any unethical or illegal information.

However, CSA stands for Child Sexual Abuse, which is a serious crime that involves any sexual act or physical contact with a minor, including sexual exploitation, molestation, grooming, or statutory rape. CSA is a traumatic and devastating experience for children, and can cause long-lasting psychological and emotional harm to the victim. Perpetrators of CSA can face severe legal consequences, including imprisonment and registration as a sex offender. It's important that any suspected incidents of CSA are reported to the authorities immediately.