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2. Card security code - Wikipedia

   en.wikipedia.org/wiki/Card_security_code

   There are several types of security codes and PVV (all generated from DES key in the bank in HSM modules using PAN, expiration date and service code): . The first code, 3 numbers, called CVC1 or CVV1, is encoded on track one and two of the magnetic stripe of the card and used for card present transactions, with signature (second track also contains pin verification value, PVV, but now it is ...

3. Recognize a hacked AOL Mail account - AOL Help

   help.aol.com/articles/recognize-a-hacked-aol...

   If your account has been compromised. If you think your account has been compromised, follow the steps listed below to secure it. 1. Change your password immediately. 2. Delete app passwords you don’t recognize. 3. Revert your mail settings if they were changed. 4.

4. Help:Two-factor authentication - Wikipedia

   en.wikipedia.org/wiki/Help:Two-factor_authentication

   Two-factor authentication ( 2FA) is a method of adding additional security to your account. The first "factor" is your usual password that is standard for any account. The second "factor" is a verification code retrieved from an app on a mobile device or computer. 2FA is conceptually similar to a security token device that banks in some ...

5. Address verification service - Wikipedia

   en.wikipedia.org/wiki/Address_verification_service

   Address verification service. An address verification service ( AVS) is a service provided by major credit card processors to enable merchants to authenticate ownership of a credit or debit card used by a customer. [ 1] AVS is done as part of the merchant's request for authorization in a non-face-to-face credit card transaction.

6. Scammers now using verification codes to hijack phone numbers

   www.aol.com/news/scammers-now-using-verification...

   A new scam tries to use your phone number to scam others, and you could be at risk if you post your number in any public forum.

7. Contact AOL customer support - AOL Help

   help.aol.com/articles/account-management...

   Call live aol support at. 1-800-358-4860. Get live expert help with your AOL needs—from email and passwords, technical questions, mobile email and more.