Key concepts

Data Bias

• Data Correctness
  • Descriptively/Normatively Correct/Incorrect 8-13
  • Why matters 14
• Data Bias
  • Selection Bias 15-19
  • Annotation Bias 20-24-28
  • Role of algorithm 29-31
• Key Takeaways 35

Metadata

• Data v. Information 2
• Data structure 3-5
• Data as Information 6-8
• Metadata
  • def 9
  • examples 10-14
  • Types:
    • Descriptive 15-17
    • Administrative 18-23
    • Use 24-25
  • how 28-29
  • data sources 30-32
• The Semantic Web 33-38
• FAIR principle 39

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Week2

XML

• Why 2-3
• Def 4-9
• Structure of Well-Formed XML
  • Rules of content 10-16
  • Rules of tag 17-20-26
  • Rules of attribute 29-34
  • root, prolog 27-28
  • Entity Reference 40-41
  • Handling duplications 42-45
  • Exercises 35-39, 46-48
  • Summary 49
• Valid XML
  • Def 50-53
  • Why 54
  • Explanation 55-61
• Data types 62-63
• XML schema 64-70

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Week3

Distributed System

• Introduction
  • Def 3
  • Motivation 4
  • Characteristics 5-6
  • Challenges 7
  • Pros & Cons 8
• The Byzantine Generals 9-17
• The Dining Philosophers Problem 18-24
• Examples
  • MMORPG 27
  • Cloud computing 28-29
• Consensus problem
  • What 30-31
  • Why difficult 32
  • Solutions
    • Paxos algorithm 33-34
    • Raft 35-43

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Week4

Security Attacks

• Attack types 3-5
• Security requirements 6

History of Cryptography

• Basic idea of cryptography 18
• Caesar, Enigma machine, Book cipher, One-time Pad 10-15

Encryption methods and keys

• Intro
  • types of encryption 17
  • terminologies 19
• Symmetric encryption – use single key 21
  • Stream cipher v. Block cipher 22-25
  • Key communication 26-27
  • Key reuse 28-30

Public key

• Def 32-34
• Applications 35
• Requirements 36-37
• RSA 38-56 ————————-
• v. Symmetric keys 7
• Session key 8
• Combining symmetric and asymmetric 9-10

Digital signatures 11-27

• Intro 12-14
• Authentication through encryption 15-17
• Digital signing
  • def 18-20
  • Digital signature 21-22
  • Man-in-the-middle attack 23-25
  • X.509 26-27

HTTPS (TLS) 28-33

• def 29-30
• Stages 31-33

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Week5

Basic mathematics

• Probability 6-17
• Ensemble 18
• Shannon Information 19
• Entropy 20-21

Compressing data

• Symbol codes
  • def 23-27
  • requirements 28
    • Uniquely decodable
    • Easily decodable – prefix code 29-30
  • code length 31-41 ————————-
  • Huffman codes 6-13
• Stream codes 15-17

Noisy-Channels

• Noisy channel def 19-22
• Error recovery scheme 23
• Joint entropy, conditional entropy, mutual information 25-28
• Channel and carried information 29-36
• Channel capacity 37-38

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Week6

Authentication of users

• Authentication v. Authorization 9-11
• Authentication types
  • Browser based
    • Basic authentication 14-17
    • Digest authentication 18
    • Use digital certificate as client 19-20
  • Non browser based
    • Form based authentication 22-25
    • Open standard 26
    • 2FA 27-29
    • Hardware 30-31
• Session tracking
  • def 32
  • Cookie 33-41

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Storing and Cracking passwords

• Attack methods
  • why 6
  • Brute-force attack 7
  • Dictionary attack 8-9
  • Rainbow tables 13-15
  • Social engineering 20-21
• Storing methods
  • Hash value 10-12
  • Add salt 16-17
• CAPTCHA 23

Web attacks

• Injection 30-34
• Cross-site scripting 36-45
• Cross-site request forgery 46-51 ————————-
• DDoS 15-18
• Protecting your systems 19-27

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Week7

HTTP

JSON & CSV

• Serializing data 2-3
• CSV 7-13
• JSON
  • def 14
  • Structure 16-20
  • XML and JSON 21-24, 30-32
  • Javascript JSON 25
  • Use in databases 26-29

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Week8

RESTful API

• API 3-11
• Web API 15-17
• REST API
  • def 18-19
  • Fundamental concepts 20-30
  • Resources & Representations 31-39
  • Uniform Service Interface 40-45
  • Stateless 46
  • Hypermedia constraint 47-51
  • Application Semantics 52-53
  • Media types 60-63
  • Self describing

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Week9

AJAX

• def 5-10
• AJAX and browser 11-12
• AJAX and Web services 13-14
• Setting up
  • example 16-20
  • GET or POST 23-24
  • between open and send 25-27
• Handling XML 32-36
• Handling JSON 37-38

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AJAX Security

• SOP 7
• JSONP 8-24
  • Access JSON Object 9-10
  • Pad JSON Object 11
  • FUnctions using JSON 12-14
  • Flickr example (Callback) 15-23
  • Security concerns 24
• CORS 25-30
• Preflight message 31-33
• General security 34

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Week11

Cloud and Virtualisation

• Building a datacenter
  • why 3-4
  • defs 5-6
  • Physical requirements 7-15
  • Topology 16-18
  • Failures 19
• Datacenter loads
  • Service models 20-22
  • Datacenter workloads 23-26
  • Big data 27-30
• Hypervisors and virtualization
  • def 31, 33-34
  • why 32
  • pros & cons 35, 43
  • VM images 36-37
  • Hypervisor 38-40
  • Microkernels 41

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Week12

• basics
  • trust 8
  • ledger 10-11
• blockchain
  • def 12
  • blockchain and trust 13-14
  • transaction 15-16
  • verifiable accounting 17-22
    • validation 24-25
    • verification 27
  • blockchain mining 28-32
  • 51% attack 33
    • proof of stake 34
    • proof of authority 35
  • applications 37-45