SECURITY TIPS

Bumping: what it is and how to protect your home

Security tips from Mottura’s experts
2026-09-23
1 min read
Mottura security tips Bumping

What is the bumping technique?

Bumping (or key bumping) is one of the most common methods of breaking into Europrofile cylinders with a traditional operating mechanism (using pins and springs).

Originally developed as a technique for locksmiths, over the years it has become increasingly common amongst burglars as well.

 

How does key bumping work?

To using this technique to attempt an attack against the cylinder, two tools are required:

  • a blank key that has been filed to the maximum depth (also known as a bump key);
  • a striking tool (such as a hammer).

The bump key is inserted into the cylinder and tapped with the hammer, causing the pins to jolt slightly until they are aligned, thereby allowing the cylinder rotor to move and the door to open.

 

How can you protect your home against bumping?

  • Buy an anti-bumping Europrofile cylinder, fitted with special shaped pins that block the action of the bump key (such as Mottura Champions® cylinders).
  • Install a magnetic Defender® to protect your cylinder. This device completely shields the keyway using a special steel plate that can only be unlocked with a specific magnetic key.

Prodotti correlati

  • Europrofile Champions® Cylinders

    The range of Champions® security cylinders includes different cylinder models, each of which is characterized by particular technical qualities, different types of allowed key duplication and the numerous new applicable functions.

    Each set of keys, sealed at the origin, is accompanied by the personal ownership card to be showed while requesting key duplicates.

    The cylinders are divided into Silver Series (C10 and PRO/Modular), Gold Series (C28PLUS, C39 and CP6) and Platinum Series (C55 and C3D). All models have common safety features; furthermore, each cylinder is characterized by different mechanical systems, increasing the level of security, or in combination with each other to increase the level of complexity of the cylinder itself.

    All Champions® Europrofile security cylinders are certified according to the UNI EN 1303 standard at the highest achievable levels, including resistance to Bumping, Picking and Tracing manipulation techniques.

  • Magnetic Defenders®

    Magnetic Defenders® add an additional level of protection for your security door lock compared to traditional mechanical models. A special cover completely seals the keyway and can only be rotated to show the keyhole using a special magnetic key. Only once the cover is fully rotated can the key be inserted to open the door. 

    The magnetic Defender® is the best form of protection against acid attacks, as well as against break-in attempts such as the use of a drill, pick, percussion blows and extraction of the cylinder rotor.

Hai bisogno di altre informazioni?

Scrivi al nostro team commerciale