Use Google's Advanced Search page.

* If want to fine-tune your search beyond the basic keyword query,then here’s a secret for you,almost all of this fine-tuning can be done from the simple pull-down menus and checkboxes on Google’s Advanced Search page.

 * You can access the Advanced Search page by clicking the Advanced Search link on Google’s home page or simply search "google advanced search" and for more quickly, click on "I'm Feeling Lucky" on google's home page.

* When you need to fine-tune the occasional search, this is the page to use!

Hardware keyloggers...

* A hardware keylogger is device which monitors every keystroke, screen shots, chats etc typed on the computer.

* They can be implemented via BIOS-level firmware, or alternatively, via a device plugged inline between a computer keyboard and a computer.

* A hardware keyloggers are very harmful and store all the information that is typed through keyboard if they are connected.

*So be careful when you are operate computer from cyber cafe or using any other's computer.

Online virus scanners.

- Online file scanners have capabilities to scan the given file with many antivirus,online virus scanners is one of the best and effective way to detect suspicious virus files.

- Hackers also take advantage of these virus scanners and use it for scanning their virus files to check whether it’s fully undetectable or not.

- Some of the popular online virus scanners are as follows:

[1]http://onlinescan.avast.com/

[2]http://www.virustotal.com/

[3]http://novirusthanks.org