The stars you see against locks are awarded when a cylinder has passed certain criteria of the TS007 British standard. The lower the stars the lower the standard of protection the lock is going to offer.
Are all star-rated cylinders anti-snap?
Homeowners need to be aware that in order to protect against a lock snapping attack, they need to fit a cylinder that has been tested for snap resistance and approved to either Sold Secure Diamond level or at least have the 3-star Kitemark. Contrary to popular belief a snap cylinder, even with a 1-star Kitemark is not always anti-snap, no matter what it says on the packaging.
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