Well i am late in publishing it, I have shifted to new house and got my Communications on ACM quite late. Firstly i would like to say thanks to ACM because this time i got my subscription magazine at my door. Coming to the point now... The web has become one of the primary ways people interact with their computers, connecting people with a diverse landscape of content, services, and applications. users can find new and interesting content on the Web easily, but this presents a security challenge: malicious Web site operators can attack users through their Web browsers. Browsers face the challenge of keeping their users safe while providing a rich platform for Web applications. Browsers are an appealing target for attackers because they have a large and complex trusted computing base with a wide network-visible interface. Historically, every browser at some [+]