33. Keep the Hackers Out, Part 3

What's the most important step to take if an account gets hacked?  
- Spoiler alert: it's not changing your password.  
What youtube channel with it's 15 million subscribers had all it's thousands of videos deleted?  
What lessons can we learn from their story?  
What is authentication?  
Where do we see it in the physical world?  
How does it work online?  

Linus Tech Tips takeover

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