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2. 3-D Secure - Wikipedia

   en.wikipedia.org/wiki/3-D_Secure

   3-D Secure is a protocol designed to be an additional security layer for online credit and debit card transactions. The name refers to the "three domains" which interact using the protocol: the merchant/acquirer domain, the issuer domain, and the interoperability domain. [1]

3. Strong customer authentication - Wikipedia

   en.wikipedia.org/wiki/Strong_customer_authentication

   [3] 3-D Secure 2.0 can (but does not always [3]) meet the requirements of SCA. 3-D Secure has implementations by Mastercard (Mastercard Identity Check) [8] and Visa [9] which are marketed as enabling SCA compliance. E-commerce merchants must update the payment flows in their websites and apps to support authentication. [10]

4. Merchant plug-in - Wikipedia

   en.wikipedia.org/wiki/Merchant_plug-in

   A merchant plug-in (MPI) is a software module designed to facilitate 3-D Secure verifications to help prevent credit card fraud. [1] The MPI identifies the account number and queries the servers of the card issuer (Visa, MasterCard, or JCB International) to determine if it is enrolled in a 3D-Secure program and returns the web site address of the issuer access control server (ACS) if it is ...

5. Add or disable 2-step verification for extra security - AOL Help

   help.aol.com/articles/2-step-verification...

   Sign in to your Account Security page. 2. Next to "2-Step Verification," click Turn on 2SV. 3. Click Get started. 4. Select Authenticator app for your 2-step verification method.-To see this option, you'll need to have at least 2 recovery methods on your account . 5. Click Continue. 6. Scan the QR code using your authenticator app. 7. Click ...

6. Why am I asked to verify my account after signing in?

   help.aol.com/articles/why-am-i-asked-to-verify...

   This is an important security feature that helps to protect your account from unauthorized access. You may be prompted to get a verification code at your recovery phone number or recovery email address for any of the following reasons:

7. 2-Step Verification with a Security Key - AOL Help

   help.aol.com/articles/2-step-verification-with-a...

   If you no longer have your Security Key, use these steps: Go to the Sign-In Helper. Sign in and go to the AOL Account Security page. Turn off Security Key 2-Step Verification. When you get your Security Key back or get a new key, you can re-enable 2-Step Verification in your Account Security settings.