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Cybersecurity 1. intro to cybersecurity

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Introduces the concept of cybersecurity

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Cybersecurity 1. intro to cybersecurity

  1. 1. Cybersecurity 1: Introduction to cybersecurity 2013 Slide 1 Cybersecurity 1 Introduction to cybersecurity
  2. 2. Cybersecurity 1: Introduction to cybersecurity 2013 Slide 2 What is cybersecurity? • A very wide-ranging term with no standard definition. • It covers all aspects of ensuring the protection of citizens, businesses and critical infrastructures from threats that arise from their use of computers and the internet.
  3. 3. Cybersecurity 1: Introduction to cybersecurity 2013 Slide 3 Internet-enabled crime • Criminals see lower risks and high rewards from cyber crime than through ‘physical’ crime • Stealing confidential and national secrets by intelligence agencies and others now involves illegally accessing digitised information.
  4. 4. Cybersecurity 1: Introduction to cybersecurity 2013 Slide 4 Internet-enabled crime • Nation states have the potential to disrupt an enemy’s economy and perhaps reach their strategic objectives without risk to their armed forces • There are fewer online barriers to anti- social behaviour on the net than in face to face interaction.
  5. 5. Cybersecurity 1: Introduction to cybersecurity 2013 Slide 5 Scope of cybersecurity • Techniques of threat and attack analysis and mitigation • Protection and recovery technologies, processes and procedures for individuals, business and government • Policies, laws and regulation relevant to the use of computers and the Internet
  6. 6. Cybersecurity 1: Introduction to cybersecurity 2013 Slide 6 Cybersecurity is not… • Computer security • Security engineering • Encryption • Computer crime • Computer forensics
  7. 7. Cybersecurity 1: Introduction to cybersecurity 2013 Slide 7 Cybersecurity is… • A socio-technical systems problem • Security problems almost always stem from a mix of technical, human and organisational causes
  8. 8. Cybersecurity 1: Introduction to cybersecurity 2013 Slide 8 Cyber attack • A malicious attempt, using digital technologies, to cause personal or property loss or damage, and/or steal or alter confidential personal or organisational data
  9. 9. Cybersecurity 1: Introduction to cybersecurity 2013 Slide 9 Insider attacks • Attacks to an organisation carried out by someone who is inside that organisation • Difficult to counter using technical methods as the insider may have valid credentials to access the system
  10. 10. Cybersecurity 1: Introduction to cybersecurity 2013 Slide 10 External attacks • Attacks to an organisation carried out by an external agent • Requires either valid credentials or the exploitation of some vulnerability to gain access to the systems
  11. 11. Cybersecurity 1: Introduction to cybersecurity 2013 Slide 11 © Infosecurity magazine 2012
  12. 12. Cybersecurity 1: Introduction to cybersecurity 2013 Slide 12 Malware • Software that has some malicious intent and which is installed on a user’s computer without that user’s consent
  13. 13. Cybersecurity 1: Introduction to cybersecurity 2013 Slide 13 Malware • Key loggers – Software installed on a computer that captures key strokes and sends these to a remote system – Used to try and get personal information to gain access to sites such as banks
  14. 14. Cybersecurity 1: Introduction to cybersecurity 2013 Slide 14 Malware • Ransomware – Software that runs on a user’s computer and demands that the user pays some other organisation. If they don’t, the information on their computer will be destroyed.
  15. 15. Cybersecurity 1: Introduction to cybersecurity 2013 Slide 15 Malware transmission • Malware can usually spread itself from one computer to another either as a virus or as a worm
  16. 16. Cybersecurity 1: Introduction to cybersecurity 2013 Slide 16 Viruses and worms • Virus – malware attached to a carrier such as an email message or a word processing document • Worm – malware can autonomously spread itself without a carrier, using information about connected computers
  17. 17. Cybersecurity 1: Introduction to cybersecurity 2013 Slide 17 Malicious and accidental damage • Cybersecurity is most concerned with – Cyber attacks • Cyber-accidents – Accidental events that can cause loss or damage to to an individual, business or public body
  18. 18. Cybersecurity 1: Introduction to cybersecurity 2013 Slide 18 • Many of the same technologies used to protect against external attack also protect against cyber-accidents. • However, sometimes protecting against cyber attacks increases the probability of cyber-accidents.
  19. 19. Cybersecurity 1: Introduction to cybersecurity 2013 Slide 19 • Adding protection increases system complexity which increases the likelihood of introducing bugs into the system and for humans to make mistakes. • For example – An attack detection system might mistakenly detects an external attack and shut down part of the system in response to this.
  20. 20. Cybersecurity 1: Introduction to cybersecurity 2013 Slide 20 Summary • Cybersecurity all about protecting, repelling and recovering from cyberattacks • Need to be aware of the potential for both insider and external cyber attacks • Malware is malicious code that is installed on a computer without the owner’s consent.

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