So what can you do to increase your chances of being able to defend yourself? An easy step to take is to acquire a pepper spray device.

Another feature I like is the safety mechanism. You must turn off the safety before you can use it, which reduces the chances of misfires, something you DO NOT want to happen with pepper spray. The safety feature also helps prevent children from firing it.
The spitfire has a quicker effect on your attackers than other foam or stream pepper spray. It comes with a key ring and you can test to see if it is still full by putting it in water at room temperature. If it floats and breaks the surface of the water you need to refill it or buy a new one.
A five star review of this device on Amazon.com states-
"Gave this to my son at college, there were some issues around campus. He was coming home from a night class when he was approached by a drunk man who demanded his wallet. My son had this in his hand as he was walking back to him dorm. A quick point and spray, and the drunk was down for the count. My son got away and campus security caught the guy shortly after. Turned out this was the same guy was giving trouble to many people. Thank you, thank you, thank you"