Computerphile

Wanacrypt works super fast and even when you're offline. Dr Pound explains how hybrid ransomware systems work.


Original Wana Decrypt0r video: https://youtu.be/88jkB1V6N9w
The Perfect Code: https...

$300 or your files are toast: Dr Pound takes a look at the latest ransomware to be doing the rounds.

How Wana Decrypt0r encrypts files:
https://youtu.be/pLluFxHrc30

Microsoft Blog: http://bit....

A hacked car that could kill you should be more worrying than a thousand lightbulbs taking Facebook offline. University of Cambridge's Professor Ross Anderson explains why safety should be higher o...

How do we control our own data while allowing it to be mined? Dr Richard Mortier of The University of Cambridge discusses some of the issues behind data harvesting.

Thanks to the University of Cam...

How does rich audio compress to stream across the internet with little quality loss? Audio Analytic's Dr Chris Mitchell explains.

Audio Analytic is a sound recognition software company based in Ca...

Walk around inside a working processor and see all the components operating. Jason Fitzpatrick shows us the Centre for Computer History's MegaProcessor .

MegaProcessor was built by James Newman an...

Computerphile helps Dr Steve Bagley clean up the Computer Science department's Sun server from the '80s

Music during 'duster buster' sequence: Split Screen by Silent Partner (https://youtu.be/DXSj...

How are encryption standards constants chosen? Dr Mike Pound explains these not-so-magic numbers.

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Could Smart Contracts be the end for Uber, Amazon and eBay? Blockchain technology as an escrow service, Christopher Ellis explains.

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Secure Hashing Algorithm (SHA1) explained. Dr Mike Pound explains how files are used to generate seemingly random hash strings.

EXTRA BITS: https://youtu.be/f8ZP_1K2Y-U
Tom Scott on Hash Algorith...

Deriving the Reed-Muller Code, used by Mariner 9 to send back pictures from Mars. Professor Brailsford shows how it can be coded recursively.

EXTRA BITS: The Professor's program in action: https:/...

NASA had to implement error correction for the spacecraft that travelled to Mars - Professor Brailsford explains how the Mariner series managed to send back pictures from another planet.

Reed Mull...

End to end encryption, government ministers are again talking about stopping it. What is it and why might that be a bad idea? Dr Mike Pound explains.

Hololens: https://youtu.be/gp8UiYOw8Fc
Block...

Blockchain is the underlying technology behind cryptocurrencies bringing together Merkle trees, Hashing & Distributed Architecture. Christopher Ellis explains.

Note1 - At 6:46 when Chris is drawin...

Bubbles in the pipeline? Some of the basic operations at the heart of the CPU explained by Dr Steve Bagley.

EXTRA BITS: https://youtu.be/t_RnwTW87_Q
Why CPUs Need Caches: https://youtu.be/6JpLD3...

Superb integration, but a limited field of view, Dimitri Darzentas demonstrates the incredible Microsoft Hololens.

Google Tango: https://youtu.be/z1gMRZiM9RY
EXTRA BITS: https://youtu.be/6ux9wtM...

Taking Augmented Reality to the next level, Google's Tango uses depth cameras and lasers. Dimitri Darzentas demonstrates.

Sneak peek at next video:
Microsoft Hololens: https://youtu.be/gp8UiYOw8...

Summing up why Hamming's error correcting codes are regarded as 'Perfect' - Professor Brailsford explains.

EXTRA BITS: https://youtu.be/i4zC67Yf5Iw

For more background on this: https://youtu.be/...

How do you implement an on/off switch on a General Artificial Intelligence? Rob Miles explains the perils.

Part 1: https://www.youtube.com/watch?v=4l7Is6vOAOA
Rob's Original Discussions on Genera...

Part 1 of a Series on AI Safety Research with Rob Miles. Rob heads away from his 'Killer Stamp Collector' example to find a more concrete example of the problem.

Sneak Peak at Part 2: https://www....

Putting search algorithms into practice. Dr Mike Pound reveals he likes nothing more in his spare time, than sitting in front of the TV coding.

EXTRA BITS: https://youtu.be/kF7KlThoT9w

Mike's Cod...

The powers of two and the algorithm that helps them correct errors. Professor Brailsford explains how to fix those one-bit blips.

EXTRA BITS: https://youtu.be/e_JuNuJnvjI

More about these codes ...

Using Optical Flow to position augmented reality content above wargaming scenes. Dimitri Darzentas is a Horizon CDT PhD student & member of the Mixed Reality Lab.

3D Scanning Miniatures: https://y...

Improving on Dijkstra, A* takes into account the direction of your goal. Dr Mike Pound explains.

Correction: At 8min 38secs 'D' should, of course, be 14 not 12. This does not change the result.

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Turning exquisitely painted miniatures into high definition 3d models using a camera and a turntable. Dimitri Darzentas is a Horizon CDT PhD student & member of the Mixed Reality Lab.

Thanks to Th...

As communications become more complicated, the amount of bits required to succesfully correct an error increases, but by how much? Professor Brailsford talks multi-dimensional parity bits.

Profes...

Bringing digital into interactive theatre. Roma Patel is a designer and member of the Mixed Reality Laboratory who is looking to computing to provide extra engagement with young theatre-goers.

Mo...

Dicussing implementation with Professor Brailsford.

Professor Brailsford emailed me after we recorded this to say that of course he should have discussed programming language selection too.

Dij...

The basis of almost all functional programming, Professor Graham Hutton explains Lambda Calculus.

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Characteristically ahead of his time, Clive Sinclair built his version of the iPad, back in the late '80's. Spencer shows us his "Cambridge Computer" Z88.

Spencer's Z80 based RC2014 project: http:...