You might be surprised how easily many common locks can be opened without the original key. One of the quietest methods is called lock bumping, and because it leaves no signs of forced entry, it can defeat a lock without anyone realizing how the intruder got in. Here is what it is and how to protect against it.
What Is Lock Bumping?
Lock bumping is a technique for opening a standard pin-tumbler lock without its key. It is simple to learn, leaves little or no trace, and works on a surprising number of ordinary locks, which is exactly what makes it dangerous.
How It Works
An intruder inserts a specially cut “bump key,” available cheaply online, into the keyway and strikes it with a screwdriver handle or similar object. The impact briefly bounces the lock pins above the shear line, and in that split second the lock can be turned and opened. Done well, it leaves no scratches or broken hardware.
How to Protect Your Home
- Upgrade your locks: choose deadbolts advertised as bump-resistant or high-security, which use special pins and tighter tolerances.
- Consider smart locks: keyless smart locks remove the traditional keyway that bumping relies on.
- Add security pins: some locks can be fitted with spool or serrated pins that resist bumping.
- Back it up with an alarm: since bumping leaves no visible damage, door sensors and a monitored system are often the only way to catch it.
Why a Monitored System Is the Real Safeguard
A determined intruder can defeat almost any lock eventually, and bumping does it quietly. A monitored SafeTouch system with door and entry sensors detects the door opening regardless of how the lock was beaten, and the monitoring center is alerted so help can be dispatched. Explore SafeTouch security packages or contact our team today.
Frequently Asked Questions
What is lock bumping?
Lock bumping is a technique that opens many standard pin-tumbler locks without the original key and without obvious signs of forced entry. An intruder inserts a specially cut bump key and strikes it, briefly jumping the lock pins so the lock turns.
How do I know if my locks are vulnerable to bumping?
Most basic pin-tumbler locks are vulnerable. Locks advertised as bump-resistant or high-security, or smart locks with no traditional keyway, are much harder or impossible to bump.
How can I prevent lock bumping?
Upgrade to bump-resistant or high-security deadbolts, use locks with security pins, consider keyless smart locks, and add a monitored alarm with door sensors so any entry, even one that leaves no marks, triggers an alert.
Why does a security system matter if a lock can be bumped?
Because lock bumping leaves no visible damage, a monitored system is often the only thing that catches it. Door sensors detect the door opening and the monitoring center is alerted, so a quiet entry does not go unnoticed.