You need firewall program for your computer.
There are many programs that runs in your computer once you started it up. Some of these programs will access the internet, get some information from the internet or send some information from your computer to the internet world.
Some are good information, example security updates for the programs that are running in your computer. Some are harmless information, example advertisement display in according to your geographical location and your internet surfing habit.
However, there are some bad programs. These programs will collect your personal data, eg. password, credit card number, bank account or other sensitive information that are stored in your computer. It will send it out through the internet. Someone may want your information and used it for whatever reasons that do not want you to know.
We do not want any of our personal or sensitive data to get out of our computer without our knowledge. Who knows who will get hold of these data and how it is used.
So, a firewall program is created to monitor and guard your computer against these bad programs. It is like having a door with a security guard standing by. It will look through all programs that passes through your computer. It will block any suspicious programs that try to send data our of your computer without your knowledge. It will also block programs that are in its list of bad programs. Therefore, a firewall program gives you additional security while you connect your computer to the internet.
You must update your firewall program regularly to enjoy maximum protection. It is good to follow the program recommendation.
Wai-Pan Chan has a website http://www.startwebiz.com. Wai-Pan likes to share his knowledge and findings through his website.
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