An analyst is searching a log for potential credit card leaks. The log stores all data encoded in hexadecimal. Which of the following commands will allow the security analyst to confirm the incident?
A) cat log |xxd -r -p | egrep -v '[0-9]{16}'
B) egrep '(3[0-9]){16}' log
C) cat log |xxd -r -p | egrep '[0-9]{16}'
D) egrep '[0-9]{16}' log |xxd

Question

Quizplus · Accepted Answer

The command "cat log |xxd -r -p | egrep '[0-9]{16}'" decodes the hexadecimal data and then searches for sequences of 16 digits, which is the typical length of a credit card number.

An Analyst Is Searching a Log for Potential Credit Card