Extensions are often the cause of infection of the PC.
One of the advantages of Google Chrome steel extension. Initially, the search giant largely lost to competitors, but extensions allow you to improve the functionality.
Google has decided to eradicate this problem, so soon to install extensions will be possible only through the official Chrome Web store.
The new rules will be implemented gradually. Now any new extension cannot be installed directly. Instead, the application redirects the user to the online store. As the ability to use third-party extensions will disappear with the release of Chrome 71 in December.