What Is a Brute Force Attack?

February 16, 2026

2 min read

TransPecos Bank

Brute Force Attack education

At TransPecos Banks, your security is always at the top of our list. One of the threats we protect against is something called a “brute force attack.”

So, what exactly is a brute force attack?

Think of a brute force attack the same way you might think of a thief trying to open a combination lock—not by knowing the combination, but by trying every single number until one works.

Criminals use computers to do something similar with debit cards.
They guess thousands of random card numbers, hoping one of them happens to be real.

Most of these guesses go nowhere. But every now and then, one of the random guesses matches an actual card number. When that happens, the criminals may try a small test purchase—often just a few dollars—to see if the card works.

What the crooks cannot do

A brute force attack does NOT mean anyone broke into your bank account, and it does not mean someone has your personal information. They are simply guessing numbers and seeing what sticks. They do not know your name, address, Social Security number, or any other private details

How we protect you

At TransPecos Banks, our fraud monitoring tools constantly watch for unusual card activity.
If we see something that looks like one of these brute force attempts, we step in quickly.

This includes:

Blocking suspicious transactions.

Flagging cards that may have been touched by this kind of activity.

Issuing a new card right away, just to be safe.

Even if the criminals only guessed a number and never gained access to your account, we prefer to replace your card than take any chances with your security.

How this may affect you

If you receive a message from us saying your card was part of a brute force attack. It simply means your card number may have been one of the numbers criminals randomly guessed.

To keep you protected, we will:

Deactivate your current card.

Send you a brand-new card in the mail.

Provide convenient access to your new virtual card in Online Banking and the mobile app:
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What you can do going forward

You don’t need to change any habits or learn anything new. But here are a few friendly reminders:

Keep an eye on your transactions from time to time.

If you see anything that looks unusual, give us a call.

If you ever have questions, concerns, we’re always here to help—online, by phone, or at your local branch.

We’re here for you

Brute force attacks are something banks deal with every day, and we’re proud to say our systems caught this activity quickly. Our goal is simple: protect your money and give you confidence every time you use your card.

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