Internet is very popular and used all over the world. The use of internet is increasing day by day but it is not much secured. The things on the internet are not secured including a person and the system used for accessing the internet. The security services provide web security to vulnerable websites but still it is not possible to secure every website and the end user always has a risk from hack into their system or missing of their important data and information. In this research, paper we explain the client side security mechanisms in which how one web browser extension increases the security on the web and protect their user from the different types of attack is explained. This extension checks each and every request and response between web server and web client and if any malicious thing is found, it detect and block them and execute the other useful things.