Which groundbreaking e-commerce security innovation was first widely implemented in 1994, enabling the explosion of online shopping by protecting credit card transactions?

The world of e-commerce has transformed how we shop, with groundbreaking innovations reshaping retail over the decades. This trivia question explores a pivotal moment in e-commerce history that fundamentally changed online shopping security. Test your knowledge about the technological developments that built today's digital marketplace and gave consumers confidence to shop online.

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SSL (Secure Sockets Layer) encryption
Two-factor authentication
Blockchain payment verification
CAPTCHA verification system