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Change the lock cylinder to be a little safer.
You can find a master to change, and the lock cylinder can be bought by yourself.
You can find a lock picking company or adjust the position of the steel ball with the key to rematch the key. The lock cylinder of the anti-theft door has not been matched, so it should be cheaper than buying a lock.
Pull it out, pour the pencil lead grinding powder or engine oil or vegetable oil, and reinsert the key to open it. Generally speaking, it is because the lock cylinder is rusty.
It's not that it's not easy to pry, it's not that you can't pry, it's changing, it's very expensive,
Now the anti-theft door locks are high-precision computer slots, with the key sometimes can not open the door is normal, the lock cylinder and key of the anti-theft door try not to oil, with a very fine pencil lead powder. You can take a look at the manual of the security door lock.
Welcome to the lock picking company...