Malicious code

computer viruses

• a computer virus is something that can erase info on your computer 
• It copies itself  and infects other files
• It gets on your computer by opening files from the web

trojans

• A Trojan is  a type of malware disguised as a legitimate software. 
• Its dangerous because it can trick you into thinking its useful software. 
• You can get it by opening pop-up ads

worms

• Copies itself and uses a network to send copies to other computers.
• It can create a zombie computer for bot net.
• You can get it by opening infected files or applications.

adware

• Makes advertisements appear on your computer.
• When you install the program you want you also install the malware.
• You get it by downloading something your not supposed to.

spyware

• It gets installed on your computer without you knowing it.
• It can track what you do on the internet
• installing free programs you find on the web.

the end