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What is a Credential Stuffing Attack?

A credential stuffing attack is a type of cyber attack that uses a list of stolen login credentials to gain unauthorized access to multiple online accounts. The attacker obtains a list of usernames and passwords, often from a data breach, and then uses automation tools to try these credentials on different websites and services. If the credentials match an account on a website, the attacker can gain access to that account and potentially steal sensitive information or perform malicious actions.

Credential stuffing attacks are particularly effective because many people reuse the same login credentials across multiple websites and services. This means that if a set of credentials is compromised in one place, an attacker can use them to try and gain access to other accounts.

To protect yourself from credential stuffing attacks, it is important to take steps to secure your online accounts and to be aware of the signs of a potential attack. Here are some tips to help you stay safe:

  • Use unique login credentials for each online account. Avoid using the same username and password combination for multiple websites and services. Use a password manager to generate and store complex and unique passwords for each account.
  • Enable two-factor authentication (2FA) on your accounts. Two-factor authentication adds an extra layer of security by requiring a second form of verification, such as a code sent to your phone, in addition to your login credentials.
  • Be careful when clicking on links. Be wary of links in emails or messages that ask you to enter your login credentials. Instead, navigate to the website directly by typing the URL into your browser.
  • Use a reputable anti-virus software. Keep your computer and mobile devices protected by using anti-virus software and keep it up-to-date.
  • Be aware of the signs of a potential attack. If you receive notifications of failed login attempts on your account, or if you notice suspicious activity, take it as a sign that your account may be under attack.
  • Report any suspicious activity. If you suspect that your account has been compromised, contact the website or service immediately and change your login credentials.

By following these tips, you can take steps to protect yourself from credential stuffing attacks and keep your personal and financial information safe. However, it's important to remember that it's not possible to be 100% safe, and it's always good to be aware and report any suspicious activity.


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On 1/21/2023 at 11:09 AM, ZandraJoi said:

I like this guide you posted. We can't be too careful at all. Too many people don't realize that NOTHING on the internet is private.

Thanks.  My recent guides have really been focused around enforcing that reusing the same password is a poor idea.  Although there is so much to cover as a whole. 😅

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