CS50 Cybersecurity - Lecture 2 - Securing Systems

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This is CS50, Harvard University's introduction to the intellectual enterprises of computer science and the art of programming.

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TABLE OF CONTENTS

00:00:00 - Introduction
00:00:17 - Wi-Fi
00:02:50 - HTTP
00:08:50 - Packet Sniffing
00:13:45 - Cookies
00:18:32 - HTTPS
00:37:56 - VPNs
00:41:11 - SSH
00:43:48 - Ports
00:51:33 - IP Addresses
00:53:33 - Deep Packet Inspection
00:54:50 - Proxy
01:03:49 - Malware
01:12:43 - Antivirus
01:15:19 - Zero-Day Attacks

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LICENSE

CC BY-NC-SA 4.0
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David J. Malan

[azr]

I just want to say thank you sir for your quality courses for free. The first time I saw your course was like 10 years ago and until now I still get a lot of value from courses like this

[markuvanni]

What's amazing is two months in and "only" 26K views? Folks, you don't know what you're missing (literally). Great job!

[unclelukedigitals]

You do know how to make learning interesting by breaking complex topics into simple concepts. Thank you

[sitynin]

An ardent follower David Sir.
Just a suggestion that it would be great if you could follow a topic with a real world example.That would cement a topic visually for visual learners like us.
Well this is what Worm means and there was an incident with Microsoft where this and this happened😊

[cybersechs]

36:00 interesting bit about the supercookies. Are they prevalent if you are using something like TAILS OS

[pavelhosek]

Why is it neccesary for HTTPS to have a 3rd party (CA)? Wouldn't asymmetric cryptography just between the client and the server, without the CA, do the same job?

[x]

What is the difference between system, application, services and platforms? What does it mean to secure them in their contexts? It seems blurry to me especially between system and application.

[VijayGandhinagar]

About 10+ years ago a cable TV company told me what my old password is in plain text when I called them to help me reset my password. I was shocked and angry at the same time.

[napukapu]

Man in the middle is now *machine* in the middle?