Understanding and Preventing Credential Theft
March 17, 2026
Online scams are becoming an increasingly common part of everyday life. A recent Pew Research Center study1 found that 73 percent of U.S. adults say they have experienced some type of online scam or cyberattack, ranging from fraudulent charges to hacked accounts and phishing attempts.
Many of these incidents begin with credential theft, which occurs when a bad actor gains access to the login information used to enter online accounts. Once someone has that information, they can attempt to access other accounts, change security settings, or use your identity to carry out additional fraud.
Because so much of daily life now happens online, understanding how credential theft works has become an important part of protecting both your finances and your overall financial wellbeing. When your accounts are secure, it becomes easier to manage your money with confidence and avoid the stress that often comes with fraud.
How credential theft usually happens
Credential theft rarely begins with a complex cyberattack. More often, it starts with a message that looks legitimate. You might receive an email that appears to come from your bank asking you to verify account information, or a text message claiming there is an issue with a delivery.
These messages are designed to create urgency so that people respond quickly and enter their login details without verifying the source.
Criminals also take advantage of a common online habit. Many people reuse the same password across multiple websites. If one company experiences a data breach and login credentials are exposed, fraudsters can test those same usernames and passwords across dozens of other sites in hopes of gaining access.
Why stolen credentials can create bigger problems
A single compromised account can quickly create a chain reaction. Email accounts are often the key to resetting passwords for other services. If a criminal gains access to your email, they may be able to request password resets for banking, shopping, or social media accounts and take control of them as well.
Stolen credentials may also be used to send phishing messages to friends and family from your account. Because the message appears to come from someone they trust, others may be more likely to click a malicious link or share personal information.
Protecting your credentials helps safeguard not only your accounts but also the peace of mind that comes with knowing your financial life is secure.
Building habits that protect your accounts
Preventing credential theft does not require advanced technical knowledge. A few consistent habits can significantly strengthen your online security.
Strong and unique passwords are a good place to start. When each account has its own password, one compromised login cannot unlock multiple accounts. Many people use password managers to securely store complex passwords without needing to remember them all.
Multi factor authentication is another valuable tool. When enabled, it requires a second form of verification, such as a code sent to your phone, before someone can access your account.
It also helps to pause before clicking links in unexpected emails or text messages. If a message claims to be from a company, you do business with, visiting the company’s website directly or contacting them through a verified phone number can help confirm whether the request is legitimate.
Small habits like these can make a meaningful difference in protecting your accounts and supporting long-term financial wellbeing.
Staying alert to potential warning signs
Credential theft does not always reveal itself immediately, but there are signs that something may be wrong. Password reset emails you did not request, login alerts from unfamiliar locations, or notifications that changes were made to your account details can signal that someone else may have gained access.
Unexpected transactions or messages sent from your accounts without your knowledge should also prompt a closer look. Acting quickly when something seems unusual can help limit potential damage and restore control over your accounts.
Support is available
Online fraud continues to evolve as technology changes especially in the age of AI, which is why awareness and strong security habits are so important. Affinity offers resources to help members stay informed about common scams and learn practical ways to protect their accounts and personal information.
You can explore our Fraud Prevention Hub 2, which includes guidance on recognizing fraud attempts, steps you can take to strengthen your security, and what to do if you believe your information has been compromised.
This information is for informational purposes only, is intended to provide general guidance, and does not constitute legal, tax, or financial advice. Each person's circumstances differ and may not apply to the specific information provided. You should seek the advice of a financial professional, tax consultant, and legal counsel to discuss your particular needs before making any financial or other commitments regarding the matters related to your condition.
1Retrieved from: https://www.pewresearch.org/internet/2025/07/31/online-scams-and-attacks-in-america-today/
2Retrieved from: https://www.affinityfcu.com/fraud-prevention-hub/