It’s true that having your back turned to an attacker is one of the most vulnerable positions you can be in, but there are things you can do to keep the situation from turning deadly.
The key is to always be aware of your surroundings. Use your five senses to help you perceive danger, and act quickly to protect yourself. Of course, it’s also important to make the correct moves to avoid putting yourself in further danger.
The video below demonstrates how to protect yourself when attacked with a knife from behind.