Card Enumeration Attack Guide

What is a Card Enumeration Attack?

A card enumeration attack is a type of cyber attack where an attacker tries to determine the sequence of a victim's credit card numbers by making small purchases or inquiries. This attack can lead to the exposure of sensitive card information.

Methods of Card Enumeration Attack

• Brute Force
• Transaction Sequence Analysis
• Replay Attacks

Brute force involves trying every possible combination of numbers until the correct sequence is found. Transaction sequence analysis involves studying the patterns of legitimate transactions. Replay attacks involve intercepting and replaying legitimate transactions.

Preventing Card Enumeration Attacks

Here are some ways to protect against card enumeration attacks:

• Use strong, unique passwords for all accounts
• Enable two-factor authentication
• Monitor your accounts for unusual activity