IACI maintains an encrypted/hashed version of cards numbers it has previously
seen. If a user would like to check to see if a particular card has ever been seen by
IACI sensors before, the user would access this page and enter a SHA256 HASHED version of
a credit card number. ONLY SHA256 HASHES will be accepted by the system.
DO NOT ENTER A CARD NUMBER, it will be rejected by the system. If a match to the SHA256 is
present on the system, it will display a limited subset of what it knows about that hash.