Items21The creator’s order
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The Internet: Packets, Routing & ReliabilityYouTubeA natural place to start, because every email, video call and web page you use travels this way. Vint Cerf, one of the internet's founders, and Spotify engineer Lynn Root show how a message is chopped into small pieces called packets, sent by whatever route is cheapest at the moment, and checked…0 - 2
The Internet: IP Addresses & DNSYouTube"It's always DNS" is an engineering in-joke, and this short video explains why. Vint Cerf and software engineer Paola Mejia cover how every device on a network gets a numeric address and how the Domain Name System turns a friendly web address into that number.
At under seven minutes it pairs…0 - 3
The Internet: How Search WorksYouTubeA search box looks instant, but the work happens long before you type. John, who led search and machine learning at Google, and Akshaya from Microsoft Bing explain how programs called spiders crawl the web ahead of time to build an index, and what decides which results come first.
It also touches…0 - 4
What is an API? (in 3 minutes)YouTubeThree and a half minutes, one analogy, and "we'll expose it through an API" finally makes sense. The video casts an API as a waiter in a restaurant: you never deal with the back of house yourself, you hand your order to someone who carries it there and brings back what you asked for.
It was made…0 - 5
The Internet: Encryption & Public KeysYouTubeThe padlock in your browser, explained in under seven minutes. Mia Epner, who works on security for a US national intelligence agency, starts with simple scrambled-letter ciphers and builds up to public and private keys, 256-bit encryption and the HTTPS connection behind online banking and checkout…0 - 6
Diffie-Hellman Key ExchangeYouTubeHow do two strangers agree on a secret while everyone is listening? Art of the Problem answers with paint. Each side mixes a private color into a shared public one, swaps the result, and adds its own color again, ending with the same shade that an eavesdropper cannot unmix.
The video then explains…0 - 7
How secure is 256 bit security?YouTube"It uses 256-bit encryption" sounds like marketing until 3Blue1Brown makes the number physical. In about five minutes Grant Sanderson asks how long guessing and checking would take, then stacks up imaginary computers, planets and galaxies working on the problem until the answer stops being a number…0 - 8
Hashing Algorithms and Security - ComputerphileYouTubeIf "we store the hash" has ever ended a conversation you wanted to follow, start here. Tom Scott explains what hashing algorithms are for: checking that a file is authentic and has not been tampered with on its way to you.
He then asks how secure they really are, and why the algorithms in use keep…0 - 9
How NOT to Store Passwords! - ComputerphileYouTubeThe practical follow-up to the hashing video, and the one that makes sense of so many breach headlines. Tom Scott walks through the bad ways websites have kept passwords, from plain text upward, and lands on hashing with a salt, a random extra string added for each user so that two identical…0 - 10
Hacking Websites with SQL Injection - ComputerphileYouTubeThe classic website attack, explained as a trick of language rather than wizardry. Tom Scott shows how a site that pastes whatever you type straight into its database query can be fooled into running your words as commands, letting an attacker read or wipe data through an ordinary login box.
His…0