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Virus - Ethics report

Michelle Anne Meralpis
Michelle Anne Meralpis

Computer viruses are small programs that spread from one computer to another and interfere with operations. They often disguise themselves as emails, files, or programs and deliver payloads like messages or data deletion. Macro viruses are common and infect documents and templates through application macro languages. A famous example is the Melissa virus from 1999, which spread through email attachments and caused over $80 million in damage by sending itself to the first 50 people in infected users' address books. Prevention methods include firewalls, antivirus software, scanning attachments, and backups.

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VIRUS Prepared by Michelle Anne L. Meralpis
What is Computer Virus? Computer viruses are small software programs that are designed to spread from one computer to another and to interfere with computer operation.
Spreading of Viruses Usually disguised as something else (e.g. Instant Messaging messages, Funny images, Audio and Video Files, Downloading files from Internet, Greeting cards and many more.) Cause unexpected and usually undesirable events
Spreading of Viruses (cont.) Often attached to files Deliver a payload (e.g. display a message, delete or modify a document, reformat hard drive)
Spreading of Viruses (cont.) Does not spread itself from computer to computer Must be passed on to other users through: Infected e-mail document attachments Programs on flash drives Shared files
Macro Viruses Most common and easily created viruses Created in an application macro languages (e.g. Visual Basic or VBScript) Infect documents Infect application templates
Famous Virus: Melissa Melissa attacked computers in March 1999, infecting machines when users opened a Word document attachment. Through the effect the virus had on individuals computers was minimal, users of Outlook Express unintentionally sent virus on to first 50 people who where in their Global Address Book. For companies, however, the virus had a larger impact. The virus was sent to users with the subject Important message from [name]. More than a million users were infected, the BBC reported. Also caused $80 million in damage, and was first virus to travel through e-mail.
Virus - Ethics report
Prevention Use an Internet firewall Subscribe to industry standard antivirus software Never open an e-mail attachment from someone you dont know Scan each and every attachment
Prevention (cont.) Back-up critical applications and data regularly
THANK YOU! References: http://www.cs.sunysb.edu/~mueller/teaching/cse302/chapter3.pdf http://www.slideshare.net/erwin_globio/ethics-26730763 http://en.wikipedia.org/wiki/Melissa_(computer_virus)

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Virus - Ethics report

  • 2. What is Computer Virus? Computer viruses are small software programs that are designed to spread from one computer to another and to interfere with computer operation.
  • 3. Spreading of Viruses Usually disguised as something else (e.g. Instant Messaging messages, Funny images, Audio and Video Files, Downloading files from Internet, Greeting cards and many more.) Cause unexpected and usually undesirable events
  • 4. Spreading of Viruses (cont.) Often attached to files Deliver a payload (e.g. display a message, delete or modify a document, reformat hard drive)
  • 5. Spreading of Viruses (cont.) Does not spread itself from computer to computer Must be passed on to other users through: Infected e-mail document attachments Programs on flash drives Shared files
  • 6. Macro Viruses Most common and easily created viruses Created in an application macro languages (e.g. Visual Basic or VBScript) Infect documents Infect application templates
  • 7. Famous Virus: Melissa Melissa attacked computers in March 1999, infecting machines when users opened a Word document attachment. Through the effect the virus had on individuals computers was minimal, users of Outlook Express unintentionally sent virus on to first 50 people who where in their Global Address Book. For companies, however, the virus had a larger impact. The virus was sent to users with the subject Important message from [name]. More than a million users were infected, the BBC reported. Also caused $80 million in damage, and was first virus to travel through e-mail.
  • 9. Prevention Use an Internet firewall Subscribe to industry standard antivirus software Never open an e-mail attachment from someone you dont know Scan each and every attachment
  • 10. Prevention (cont.) Back-up critical applications and data regularly