SPYWARE 2005-06 Computer Applications L6D, LAM Siu Fai (18)

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Presentation transcript:

SPYWARE Computer Applications L6D, LAM Siu Fai (18)

A pproximately 90% of all computers worldwide that use the Internet have been -----or currently are----- infected with spyware.

Adware Vs. spyware

Adware Vs. spyware Password Account name

Symptoms of Spyware Infection Soooo slow –s–start up / shut down –p–programs –m–mouse response

Pesky pop-ups –large quantity of pop- up advertisements

Symptoms of Spyware Infection Home page hijack –‘home page’ changed without users’ notice New bookmarks –new web links are added to computer Unusual icons –strange shortcuts

Symptoms of Spyware Infection Automatic redialing –connect to the Internet via dial-up connection Abnormal activity –send/receive large amount of data Uninvited toolbars –strange toolbars have been added

How does spyware infect a computer? Internet advertisement File-sharing software Pirated software Fake spyware- removal programs attachments Hackers

What does spyware do? Installation of ‘keystroke logging’ program Hijack internet browser / homepage Track Internet-surfing habits Hogs system’s memory, CPU cycles & Internet bandwidth Creates its own files, cookies, DDLs, registry key…

If you think your computer is infected with spyware Don’t take chances! Scan and remove them immediately Steps –download 2 spyware-removal programs –install and update separately –scan the entire computer –remove or quarantine the found spyware –repeat with another program

Anti-spyware programs 2 types: reactive programs can remove spyware that already lurks on the computer proactive programs can prevent entry of spyware by using a virtual shield

Reactive anti-spyware programs Ad-Aware free version Spybot search and destroy

Proactive anti-spyware programs spy sweeper etrust pestpatrol McAfee antispyware