Hammer-resistant padlocks may also be designed to resist lock-picking and bumping techniques, providing an additional layer of security against covert entry methods.
Many high-security padlocks are designed to be weather-resistant, with features such as rust-resistant coatings or seals to protect internal components from the elements.
Lever locks have unique key configurations, with variations in the cuts and grooves on the key that correspond to the heights of the levers. This uniqueness adds to the security of the lock.
These padlocks are generally heavier and more robust than standard locks. The added weight and sturdiness contribute to their resistance against brute force attacks.