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alphydan

@alphydan

71 followers 10 following 25 posts Reputation 35.33

alphydan
@alphydan Jan 2, 2019, 10:28 PM UTC

What in the world is Bitcoin?

This post is a basic introduction to the technology behind Bitcoin. It is based on a talk I gave a few months ago. The audience was assumed to know very little about the technology. Professionally, I…

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alphydan
@alphydan Apr 27, 2018, 2:50 AM UTC

The end of the written language

"What should we call each other?", said Isobel. "Well, we could always start with Mrs Crawley and Lady Grantham", replied Violet. With that dialogue we are ushered into Downtown Abbey , a British cou…

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alphydan
@alphydan Feb 14, 2018, 2:12 AM UTC

Teaching Cyber Security (Table of Contents)

This is the table of contents for a 17 part series on teaching cybersecurity to middle and high school students. ## Introduction to the shell 1. Introduction, The challenge and introduction to the mi…

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alphydan
@alphydan Feb 13, 2018, 7:29 PM UTC

Teaching Cyber Security (Part 17)

This is the 17th post of a series for teaching cyber-security in a coding-club. Read [part 16] # Putting it all together ## Combining it all In this unit we'll use what we have learnt in the previous…

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alphydan
@alphydan Feb 11, 2018, 9:53 PM UTC

Teaching Cyber Security (Part 16)

This is the 16th post of a series for teaching cyber-security in a coding-club. Read [part 15] # Bash scripts # The Shell By now you should be familiar with the operation of the shell (and the progra…

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alphydan
@alphydan Feb 11, 2018, 9:35 PM UTC

Teaching Cyber Security (Part 15)

This is the 15th post of a series for teaching cyber-security in a coding-club. Read [part 14]. # Host & whois ## Information gathering When hackers want to attack a target they will have an init…

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alphydan
@alphydan Feb 11, 2018, 9:16 PM UTC

Teaching Cyber Security (Part 14)

This is the 14th post of a series for teaching cyber-security in a coding-club. Read [part 13]. # Ping Pong on the World Wide Web # Connecting to the internet In the first module you learnt many comm…

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alphydan
@alphydan Feb 11, 2018, 8:03 PM UTC

Teaching Cyber Security (Part 13)

This is the 13th post of a series for teaching cyber-security in a coding-club. Read [part 12] # Overview ## Cowsay Let's install a new program called cowsay. Remember you can do that with: sudo apt…

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alphydan
@alphydan Feb 11, 2018, 7:38 PM UTC

Teaching Cyber Security (Part 12)

This is the 12th post of a series for teaching cyber-security in a coding-club. Read [part 11] # Copying files ## I need the same file in different directories As we have learned, bash commands allow…

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alphydan
@alphydan Feb 11, 2018, 7:25 PM UTC

Teaching Cyber Security (Part 11)

This is the 11th post of a series for teaching cyber-security in a coding-club. Read [part 10]. # Pipes and security ## Pipes and dictionaries How would you guess a password? A lot of people use comm…

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