Google allows installing online extensions from Web Store, but cannot control third-party applications outside the store. This move is currently the best way for the company to protect users from "malicious" extensions .
Google also launches a program to analyze every extension uploaded to the Web Store. Malicious or suspected malicious extensions will be removed from the Web Store to prevent dangerous problems for users.
With the introduction of this program and the additional security level for third-party extensions, according to Statcounter, Chrome has ' surpassed' Internet Explorer as the most used browser on the web in May 2012.
Developers are encouraged to register for extensions to the Web Store. They can make money from the extension by placing ads within them, like information disclosed earlier this month by Google.