Eli5: How is https secure when all social media companies track you?

Question

Self explanatory

In: Engineering

Answer 1

You’re talking to Taylor Swift at Starbucks. But you two know a language that no one else knows. So you and Tay Tay speak to each other, and can understand each other perfectly.

Anyone else in that Starbucks sees and knows exactly who you’re talking to, but they can’t understand what you are saying.