Cybersecurity
Section 12.6
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Cybersecurity - Computer Literacy - Lecture Slides, Slides of Computer Science
These are the Letcure Slides of Computer Literacy which includes Main Program and Functions, Comparing Python, Output of Vowels, While Loops, Damage Device, Public Static Double, Opening Configuration, Image Processing, Internal Board etc. Key important points are: Cybersecurity, Scale of Issue, Trojan Horses, Malware, Botnets, Undecidability of Equivalence, Operation Aurora, Html Message, Email Viruses Attachments, Cybercrime and Identity Theft
Typology: Slides
2012/2013
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Cybersecurity
Section 12.
The Scale of the Issue
- 2 billion Internet users
- 294 billion emails/day (2010) (about 90% spam)
- 35 billion tweets in 2010
- Facebook has over 600 million users (making it the
3 rd^ largest country in the world.
http://www.internetworldstats.com/stats.htm
Why?
- Anonymity
- Trust
Why?
- Anonymity
- Trust
Malware
- Viruses
- Trojan horses
- Worms
Botnets
Operation Aurora
Google and others were attacked in December, 2009.
What happened?
- Attackers chose their targets.
- Used social network sites to find their friends.
- Zero-day attack: Faked emails from “trusted” friends, which the targets opened (along with links).
- Code exploited an error in Internet Explorer to install a beachhead.
- More code installed. Now the infected machine communicated with the hackers.
Operation Aurora
Who did it?
- Probably the Chinese government.
Operation Aurora
Lessons:
- No one is safe. There will always be:
- Vulnerabilities
- Zero-days.
- Tell a spammer that you exist?
Can bad things happen when you open an email?
- Tell a spammer that you exist?
- Infect you with a virus just by opening it?
Can bad things happen when you open an email?
- Tell a spammer that you exist?
- Infect you with a virus just by opening it?
Can bad things happen when you open an email?
Old days yes, if an html message allowed Javascript and if your mail client executed it.
Now: most mail clients don’t run Javascript when you open a message.
Email Viruses - Attachments
Email Viruses
What if the attachment is a .jpeg?