← Retour au blog
tech 2 May 2026

Credit cards are vulnerable to brute force attacks

Despite strict security standards, credit cards remain exposed to brute force attacks. Discover how these threats operate and how to protect yourself.

Introduction

In an increasingly digital world, credit card transaction security is crucial. However, even with the implementation of industry security standards like PCI DSS, credit cards remain vulnerable to brute force attacks. These attacks exploit security loopholes to access sensitive card information.

What is a brute force attack?

A brute force attack involves trying many possible combinations to guess information such as credit card numbers, expiration dates, or CVV codes. Hackers use automated software to test thousands of combinations per second, hoping to find the correct one.

Attack Examples

Consider an attack that took place on a poorly secured e-commerce site. Hackers used a bot to test different combinations of card numbers, paired with expiration dates and CVVs, until a combination worked. This type of attack can bypass basic security measures if not properly implemented.

Limitations of PCI DSS standards

PCI DSS imposes strict rules on how credit card data should be stored and displayed. For example, only the first six and last four digits of a card can be visible. However, these rules do not cover all potential vulnerabilities.

Why attacks persist

While companies often follow PCI DSS standards, they tend to implement only the bare minimum required. When a vulnerability is discovered, these companies are often hesitant to invest in corrections, especially if they believe they have complied adequately with the standards.

How to protect yourself

  • Use virtual cards: Virtual cards provide an additional layer of security by limiting exposure to your actual card information.
  • Enable two-factor authentication (2FA): This measure makes it more difficult for hackers to make unauthorized transactions even if they obtain your card information.
  • Regularly monitor account statements: Constant vigilance can help detect fraudulent transactions at an early stage.

Conclusion

Despite advancements in credit card security, it is imperative to remain vigilant against threats such as brute force attacks. Adopting advanced security solutions and maintaining constant vigilance are essential to protecting sensitive data.

Let's discuss your project in 15 minutes.

credit card security brute force attacks PCI DSS two-factor authentication virtual cards
Deepthix newsletter · 100% AI · every Monday 8am

An AI agent reads tech for you.

Our AI agent scans ~200 sources per week and ships the best articles to your inbox Monday 8am. Free. One click to unsubscribe.

Visit the newsletter page →

Want to automate your operations?

Let's talk about your project in 15 minutes.

Book a call