In the last two weeks, i have been learning about computer virus. Computer virus is a living creature that live in our computer, a virus can make your computer go slower, losing file, cannot access…..ect. there are many kind of computer virus like worm , trojan horse, and phishing. These three kind of virus can done a lot of damage to your computer. Virus are very danger, the only way to destroy it is to use an-ti virus.

Phishing is a high-tech scam that uses spam or pop-up messages to attempt to deceive you into disclosing your credit card numbers, bank account information, Social Security number, passwords, and / other sensitive information. Phishing is the term coined by hackers who imitate legitimate companies in e-mails to entice people to share passwords or credit card numbers.

You can find more information about this virus in this website

http://ig.libertyonline.net/ImageGallery/Custom/cu1008/PDFs/Web_Link_to_Home_Page.pdf

Trojan horse

A Trojan horse is an email virus usually released by an email attachment. If opened, it will scour your hard drive for any personal and financial information such as your social security, account, and PIN numbers. Once it has collected your info, it is sent to a thief’s database.

you can find more information about them with this website

http://antivirus.about.com/b/2006/05/31/whats-a-trojan-horse-virus.htm

Worm

In a computer, a worm is a self-replicating virus that does not alter files but resides in active memory and duplicates itself. Worms use parts of an operating system that are automatic and usually invisible to the user. It is common for worms to be noticed only when their uncontrolled replication consumes system resources, slowing or halting other tasks.

You can find more information about worm in this website

http://searchsecurity.techtarget.com/sDefinition/0,,sid14_gci213386,00.html

Virus

A virus is a program or programming code that replicates by being copied or initiating its copying to another program, computer boot sector or document. Viruses can be transmitted as attachments to an e-mail note or in a downloaded file, or be present on a diskette or CD. The immediate source of the e-mail note, downloaded file, or diskette you’ve received is usually unaware that it contains a virus. Some viruses wreak their effect as soon as their code is executed; other viruses lie dormant until circumstances cause their code to be executed by the computer.

you can check out more information about the Virus by going to this web site

http://searchsecurity.techtarget.com/sDefinition/0,,sid14_gci213306,00.html

Atomic Number: 19

Atomic mass: 39.0983

Potassium is a metal. It is found in soil and is important for plant nutrition. Potassium is included in the human diet too. There are many kind of food that has Potassium, like rice, beans and garlic, but fruits have the most Potassium. Potassium was found by Sir Humphrey Davy in 1807. Potassium has a symbol, and the symbol is K. Potassium only has two colors silver and silvery white. Potassium has a chemical reaction. The reaction is when potassium metal is mixed with water. It produces hydrogen gas and made the potassium metal become a purple flame.

Potassium is a metal. It is found in soil and is important for plant nutrition. Potassium is included in the human diet too. There are many kind of food that has Potassium, like rice, beans and garlic, but fruits have the most Potassium. Potassium was found by Sir Humphrey Davy in 1807. Potassium has a symbol, and the symbol is K. Potassium only has two colors silver and silvery white. Potassium has a chemical reaction. The reaction is when potassium metal is mixed with water. It produces hydrogen gas and made the potassium metal become a purple flame.