The Google+Facebook extension for Firefox, Chrome and IE is an easy way to get your Facebook stream to sit inside the Google+ interface, which is ideal for users who want one central place to check everything. However, due to issues with the coding, PC World advises that it could pose a serious security risk to users and does not recommend the extension’s use.
Due to the rapid uptake of this browser extension, all security vulnerabilities are an attractive target to hackers.
Users of the application have also reported malware-like behaviour, such as changing search preferences and email signatures for certain web-based email clients.
It is not recommended that users install the Google+Facebook browser extension and users are reminded to exercise caution with new tools and services for web applications, especially if they’ve been created quickly and without due concern for security.
Source: PC World