متصفح جوجل الجديد Google Chrome 0.2.149.27 Beta
Every tab in chrome
is sandboxed, so that a tab can display contents of a web page and accept user input, but it will not be able to read the user's desktop or personal files. google
say they have "taken the existing process boundary- and made it into a jail". There is an exception to this rule; browser plugins such as Adobe Flash Player do not run within the boundaries of the tab jail, and so users will still be vulnerable to cross-browser exploits ****d on plugins, until plugins have been updated to work with the new chrome
has also developed a new phishing blacklist, which will be built into Chrome, as well as made available via a separate public API.
Google announces a so-called incognito mode claiming that it "lets you browse the web in complete privacy because it doesn’t record any of your activity". No features of this, and no implications of the default mode with respect to Google's data**** are given.
Speed improvements are a primary design goal.
The Gears team were considering a multithreaded browser (noting that a problem with existing web browser implementations was that they are inherently single-threaded) and chrome
implemented this concept with a multiprocessing architecture. A separate process is allocated to each task (eg tabs, plugins), as is the case with modern operating systems. This prevents tasks from interfering with each other which is good for both security and stability; an attacker successfully gaining access to one application does not give them access to all and failure in one application results in a "Sad Tab" screen of death. This strategy exacts a fixed per-process cost up front but results in less memory bloat overall as fragmentation is confined to each process and no longer results in further memory al********s. To complement this, chrome
will also feature a process manager which will allow the user to see how much memory and CPU each tab is using, as well as kill unresponsive tabs.
Chrome has added some commonly used plugin-specific features of other browsers into the default package, such as an Incognito tab mode, where no logs of the user activity are stored, and all ******s from the session are discarded. As a part of Chrome's V8 Java****** virtual machine, pop-up Java****** windows will not be shown by default, and will instead appear as a small bar at the bottom of the interface until the user wishes to display or hide the ******** chrome
will include support for web applications running alongside other local applications on the computer. Tabs can be put in a web-app mode, where the omnibar and controls will be hidden with the goal of allowing the user to use the web-app without the browser "in the way".
• Rendering Engine
Chrome uses the WebKit rendering engine on advice from the Gears team because it is simple, memory efficient, useful on embedded devices and easy to learn for new developers.
While all of the major tabbed web browsers (e.g. Internet Explorer, Firefox) have been designed with the window as the primary container, chrome
will put tabs first (similar to Opera). The most immediate way this will show is in the user interface: tabs will be at the top of the window, instead of below the controls, as in the other major tabbed browsers. In Chrome, each tab will be an individual process, and each will have its own browser controls and address bar (dubbed omnibox), a design that adds stability to the browser. If one tab fails only one process dies; the browser can still be used as normal with the exception of the dead tab. chrome
will also implement a New Tab Page which shows the nine most visited pages in thumbnails, along with the most searched on sites, most recently bookmarked sites, and most recently closed tabs, upon opening a new tab, similar to Opera's "Speed Dial" page.
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