Credit cards are vulnerable to brute force attacks
3 hours ago
- #PCI DSS
- #Credit Card Security
- #Brute Force Attack
- Credit card data can be stolen through account breaches and brute force attacks even with PCI DSS compliance.
- Attackers can obtain partial card details like the masked PAN, expiration date, and bank name from a 3D Secure page.
- Brute force attacks can guess missing card details, such as the CVC2, by exploiting lax rate limits and using proxies to evade detection.
- Some merchants are exempt from 3D Secure, making them targets for unauthorized transactions, where liability falls on them for chargebacks.
- PCI DSS standards allow showing sensitive information like expiration dates and partial PANs, which can be exploited if receipts or data are mishandled.
- The industry response is mixed: merchants and websites often downplay these as vulnerabilities, while payment professionals consider them known risks.