Kryptonite

Serious Security is the only business Kryptonite is in. They are committed to providing innovative products and programs, outstanding value and unparalleled customer satisfaction. Headquartered in Canton, Massachusetts, Kryptonite is a premier manufacturer and marketer of high-quality cables, chains, U-locks and flexible security systems for the bicycle, powersports, snow sports, locksmith, hardware and notebook computer markets. It is with great pride that Kryptonite provides Tough Locks for a Tough World to people in more than 50 countries. Kryptonite has won many awards and accolades over the years for products that are the toughest on the street.