Browser extension into pages. Researchers have identified 50,870 Google Chrome extensions and 34,407 programs that injected ads. Thirty-eight percent of extensions and 17 percent of programs were catalogued as malicious software, the rest being potentially unwanted adware. Browser extension A browser extension is a plug-in that extends the functionality of a web browser. Some extensions are authored using web technologies such as HTML, JavaScript, and CSS. Others are developed using machine code and application programming interfaces (APIs) provided by web browsers, such as NPAPI and PPAPI. Browser extensions can change the user interface of the web browser without directly affecting viewable content
Gazelle (web browser) Gazelle (web browser) Gazelle was a research web browser project by Microsoft Research, first announced in early 2009. The central notion of the project was to apply operating system (OS) principles to browser construction. In particular, the browser had a secure kernel, modelled after an OS kernel, and various web sources run as separate "principals" above that, similar to user space processes in an OS. The goal of doing this was to prevent bad code from one web source to affect the rendering or processing of code from other web sources. Browser plugins are also managed as principals. "Gazelle" had