CFL Automotive Security & Vehicle Lock Forensics 3

Question 1

What is the correct sequence of steps when documenting automotive lock evidence at a vehicle crime scene?

Accepted Answer

Photograph in place, document in writing, then collect

Answer

Photograph, then collect, then document in writing

Answer

Collect evidence first, then photograph, then document

Answer

Document in writing first, then photograph, then collect

Question 2

When a forensic locksmith testifies that a vehicle ignition shows evidence of 'hotwiring,' which physical finding would most strongly support this conclusion?

Accepted Answer

Damaged, cut, or bridged wiring inside the steering column housing

Answer

Scratches on the exterior door lock face and key slot

Answer

Worn wafer surfaces inside the ignition cylinder

Answer

Evidence of forced entry through the door window

Question 3

Which professional organization administers the CFL (Certified Forensic Locksmith) credential and establishes forensic locksmithing standards in the United States?

Accepted Answer

ALOA (Associated Locksmiths of America)

Answer

FBI Forensic Science Laboratory Division

Answer

NIST (National Institute of Standards and Technology)

Answer

ASTM International Security Standards Committee

Question 4

In forensic examination of an automotive lock drilled to gain entry, which combination of evidence would best support a conclusion of forced drilling?

Accepted Answer

Metal shavings, drill bit wear marks on the cylinder face, and destroyed internal components

Answer

Surface scratches on the lock face and displaced wafer marks

Answer

Chemical corrosion residue inside the cylinder and on the key slot

Answer

Evidence of freeze spray application around the cylinder housing

Question 5

What is the forensic significance of the 'shear line' when examining an automotive lock cylinder for evidence of unauthorized access?

Accepted Answer

It is the critical alignment plane where all tumblers must position for the cylinder to rotate

Answer

It marks the point where the key was originally cut to depth

Answer

It indicates the division between the outer housing and the inner cylinder plug

Answer

It shows where previous drilling attempts were made on the cylinder

Question 6

When conducting a forensic examination to determine whether an automotive lock was impressioned, which finding on a recovered key blank near the vehicle would be most significant?

Accepted Answer

Progressive filing marks or irregular depth cuts on the key blade

Answer

Uniform, symmetrical cuts matching a standard key profile

Answer

Chemical residue consistent with lubricant applied during entry

Answer

Absence of any markings indicating an unused blank

Question 7

A forensic locksmith is asked to determine whether a vehicle was stolen by relay attack or by OBD port programming. Which evidence type would most help distinguish between these two methods?

Accepted Answer

Presence of OBD port tool connector marks and abnormal key count in the ECU versus no physical intrusion evidence for relay attack

Answer

Scratches on the door lock cylinder from entry attempts

Answer

Evidence of broken glass from forced window entry

Answer

Wear marks on the ignition cylinder consistent with repeated key insertions