The best way to avoid being scammed by a fake CRA caller.
If they start raising their voice, threatening you, or tell you that you are going to be arrested, or that the government is going to seize your house, or car, and especially if they tell you that they are going to take away your children.
Just hang up.
If you receive an email from a scammer but it looks legitimate, check the return email address. Government email addresses end with “.gc.ca”, oh, and if claims to be from the Canada Revenue Agency (CRA), you should be aware that the CRA employees are they’re not supposed to and not allowed to email outside the office.
If you’re not sure, don’t buy into the threats, and certainly do not give them any information at all.