How to prevent garage door break-in?

It is so simple to break in to your garage door, it can take even 6 seconds to do that! So how do they do it? They just pull down the manually release handle rope and that's it. To feel safe you can either take off the rope or put a small pin inside the system so when you'll try to pull the rope nothing happened. It is also better to put a top seal on your garage door.