Threat of online security: How safe is our data?

Nowadays, computer is the basis equipment at home and office in this world. People use the computer online to do their business or communicate with their customer. Unfortunately, the threat of online security always happen to us. Computer virus is a common threat on computer.

Do u know what is computer virus? Let me explain to you, a computer virus is a computer program that can copy itself and infect a computer without permission or knowledge of the user. The term "virus" is also commonly used, albeit erroneously, to refer to many different types of malware and adware programs. The original virus may modify the copies, or the copies may modify themselves, as occur in a metamorphic virus. A virus can only spread from one computer to another when its host is taken to the uninfected computer, for instance by a user sending it over a network or the Internet, or by carrying it on a removable medium such as a floppy disk, CD, or USB drive. Meanwhile viruses can spread to other computers by infecting files on a network file system or a file system that is accessed by another computer. Viruses are sometimes confused with computer worms and Trojan horses. A worm can spread itself to other computers without the need to be transferred as part of a host, and a Trojan horse is a file that appears harmless. Worms and Trojans may cause harm to a computer system's hosted data, functional performance, or networking throughput, when executed. In general, a worm does not actually harm either the system's hardware or software, while at least in theory; a Trojan's payload may be capable of almost any type of harm if executed. Some can't be seen when the program is not running, but as soon as the infected code is run, the Trojan horse kicks in. That is why it is so hard for people to find viruses and other malware themselves.

It is very important for you to protect your data, what can you do? Well, you can do the following:
1) Protect your personal information. It is valuable.
2) Know who you are dealing with online.
3) Use anti-virus software, a fire-wall, and anti-spy ware software to help keep your data.
4) Be sure to set up your operating system and web browser software property and update them regularly.
5) Use strong passwords or strong authentication technology to help you to protect your personal information.
6) Back up important files.
7) Lean what to do if something goes wrong.
8) Protect your children online.
Please remember these; they can help you to protect your computer data.