CS50 2021 in HDR - Cybersecurity

TABLE OF CONTENTS

00:00:00 - Introduction
00:01:17 - Cybersecurity
00:03:15 - Is your phone secure?
00:06:40 - Common Passwords
00:08:48 - Cracking Passwords
00:25:59 - Tradeoffs
00:26:55 - Defenses
00:29:10 - Two-Factor
00:31:55 - Password Managers
00:36:38 - False Security
00:40:54 - Encryption
00:47:05 - Homework
00:48:09 - This was CS50

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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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LICENSE

CC BY-NC-SA 4.0
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International Public License

David J. Malan

[RakibulIslam-yzgn]

I just cannot express in words how much respect I have for you Mr. David J. Malan sir. The enthusiasm and the dedication you show while teaching is really phenomenal. We all can clearly see your forehead sweating and you are panting under the mask but still you are unstoppable.
This is CS50. And this is awesome.

(I'm not sure, but I think you could leave out the mask since you are in distance from the audiences and the viewers. Or, are you still wearing it as a gesture?)

[mattadata]

@David J. Malan, you are the MAN! Thank you for leading by example and wearing a mask while you teach. It must be difficult in some way or another but it shows great character!
Just finished Week 7 and looking forward to the rest of the course!

[markangier]

For anyone wondering, the lights on the front of the stage translate from binary to ASCII as "HI MOMS"

[abielwubet]

I'm unsure of the appropriate way to describe your teaching talents. amazing; a very good person. However, I only want to say one thing about you. You have taught the students at HRVARD UNIVERSITY from all over the world, particularly the African students who are unable to attend classes in person. Today, thanks to technology, we can find teachers like you sitting in our homes.
We appreciate the recognition. Be fearless and change the world. You'll earn respect.

[sayori]

So this is like a pre week 0 but i'm kind of glad they put it here, watching week 0 first was something special

[gravity]

i thought the channel was a joke but its real

[parsian_korous]

I'm sure David is the best teacher in the world

[Yassinomari]

the first best thing in this new year <3

[raicyceprine]

16:42


unrelated but I learned words: caveat(trade-off)

three take-away lessons:
1. password manager
2. two-factor authentication
3. end-to-end encryption

[lbayout]

To beign my year with real class x) amazing professor !

[tusharanand]

Big fan of yours sir! Love the way you teach ❤️❤️

[sugardaddy]

I want to learn computer science and be a great programmer. Your videos helped me so much over the years. Thank you so much sir!! Do you have any tips to cope with laziness and not succumb to distractions?

[heyitsshakil]

Any idea what the lightbulb message says?

[therealtraderlife]

The masks ensures everyone this is for sure for 2022 xD

[mircea-nonea]

So cool that the bulbs say "HI MOMS" <3

[PerpetualBrian]

You could instead implement the GPU to do more calculations faster potentially

[mlp]

why wont it work i did everything right. does the phone have to be on?

[tarekrahman]

What if the crack.py script implemented threading and multiprocessing?

[santoshpantaYT]

how did he get this data other then by survey? Its scary, even the password data is available as statistics with actual password letters!

[Andre-hcww]

Funny how a teacher at Harvard could have his math wrong, a 4 digit passcode has 9999 possibilities not 10 000. Now where’s my scholarship at ?