CFL Physical Security Assessment & Vulnerability Analysis 2

Question 1

What is 'bumping' in the context of lock attack vectors?

Accepted Answer

A technique using a specially cut key struck to momentarily set all spring-loaded pins

Answer

Bump keys are cut to maximum depth on every cut and struck while applying rotational tension, momentarily setting all spring-loaded pin stacks simultaneously.

Question 2

Which attack method would leave the least visible evidence on a standard pin tumbler lock?

Accepted Answer

Skilled picking with a tension wrench and pick

Answer

Expert lock picking with proper tools can leave minimal or no visible marks, making it the most forensically covert attack method on pin tumbler locks.

Question 3

A forensic locksmith identifies shiny, polished marks on the upper surfaces of a keyway. What attack vector does this suggest?

Accepted Answer

Pick raking, where a serrated pick was rapidly moved back and forth through the keyway

Answer

Shiny polished marks on keyway warding surfaces from rapid back-and-forth tool movement are characteristic of raking techniques used in picking attacks.

Question 4

What is 'impressioning' as an attack vector on locks?

Accepted Answer

Filing a blank key while repeatedly inserting it to create a working key from pin-mark patterns

Answer

Impressioning involves inserting a blank key, applying rotational torque, and filing the marks left by binding pins until a fully functional working key is produced.

Question 5

Which vulnerability is specifically exploited in a 'shimming' attack on a padlock?

Accepted Answer

The spring-loaded locking pawl that engages the shackle notch

Answer

Shimming exploits the spring-loaded pawl mechanism by inserting a thin shim down the shackle hole to depress and bypass the retaining pawl without using a key.

(CFL) Certified Forensic Locksmith Practice Test

(CFL) Certified Forensic Locksmith Practice Test

CFL Physical Security Assessment & Vulnerability Analysis 2