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Many social media sites and services provide _______________ for legitimate account verification.

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Many social media sites and services provide _______________ for legitimate account verification.

(a) Retina scanning

(b) Fingerprint scanning

(c) CAPTCHA

(d) 2-step verification

I have been asked this question in a job interview.

Enquiry is from Attack Vectors in section Understanding Attack Vectors of Cyber Security

1 Answer

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The correct choice is (d) 2-step verification

For explanation: With 2-Step Verification (which is also known as 2-factor authentication), users can add an extra layer of security to your account. After login, it asks for your existing phone number to send an OTP for layer-2 verification.

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