Here's a statistic
over 40% of burglaries in England and Wales involve forced doors, the average time it takes a criminal to break a basic cylinder lock is 1-2 minutes. So why wouldn't you make sure that your cylinders on any external door are immune from snapping.
TS007 3 star rating
Euro Cylinders can be rated as one star or three stars and security hardware will be rated as two stars. Cylinders are awarded a three star rating when they have passed all criteria of the TS007 british standard kitemark, including new lock snapping tests. Most kitemarked cylinders will withstand a break-in attempt, But the new TS007 3 star standard will protect you against every attempt. This security standard has been developed by the Door and Hardware Federation (DHf).