How to Lock Down What Websites Can Access on Your Computer
As websites and web apps have grown in complexity, so have their demands: They want access to your webcam to make video calls, they want to know where in the world you are to serve up local information, and so on. In fact, websites now ask for almost as many permissions as the apps on your phone do, though you might not be as familiar with how to manage them. We'll show you how. We'll also explain how to restrict the cookies and other data websites can save locally on your laptop. It's up to you whether you let sites track your identity across the web to better personalize the ads you see, but you should know the options that are available.
Control Your Browser Cookies
While access to your laptop's microphone or location is easy enough to understand, you might be less familiar with cookies, the name given to small bits of code that websites deposit on your computer. Essentially, cookies help sites recognize you when you visit again later, and remember your preferences. They can also be used to build up a profile of you and your online activity, which is why many people prefer to restrict their use, particularly when it comes to 'third-party' cookies—those that can track you across several websites, so advertisers know what you've been looking for on Google and on Amazon. You get to say whether cookies can be stored on your laptop, and it's really a question of privacy and convenience. You may not want an ad for that one parka you Googled to follow you everywhere, but you also may not want to set your location every time you open up your favorite weather site. Fortunately, most browsers give you pretty granular cookie controls, as detailed below.
Google Chrome Privacy Settings
If Chrome is your browser of choice, click the icon to the left of the address bar on any website to see what it's allowed to do. The icon will usually be a padlock, indicating a secure site, but it might be a different icon, like an "i" symbol. Choose Site settings from the menu that appears, and you'll be greeted with a long list of access controls. These include location, camera, microphone, notifications, and sound, which dictates whether the site can start blaring out audio without your permission) To quickly put all these options back to their default state, click Reset permissions. Alternatively, you can adjust each option individually. Typically, you can allow or block access to a permission, or have the site ask for permission each time. Any changes you make are saved instantly, so you can close the tap and go back to browsing. You can edit individual cookie permissions by clicking Cookies on the same menu as Site settings. For easier control, choose Settings from the Chrome menu, then Advanced, then Cookies—you'll see separate options for blocking third-party cookies, and for stopping specific sites from leaving cookies.
Mozilla Firefox Privacy Settings
Microsoft Edge Privacy Settings
Those of you who depend on Microsoft's Edge browser can check up on site permissions by clicking on the padlock or "i" symbol to the left of the address bar at the top—it's just the same as Chrome or Firefox. You can revoke any permissions that have already been granted can be by clicking the relevant toggle switch. For a more detailed review of a site's permissions, click Manage permissions from the drop-down menu. Choose a website from the list that appears, and you can toggle permissions like notifications, camera access, and access to the full screen mode on or off. To cancel all the permissions a site has, click Clear permissions. The same drop-down menu showing the Manage permissions option also has a Media autoplay settings link. Click it to control whether videos and audio can automatically start playing on this site, without any interaction from you. To control cookie use in Microsoft Edge, open the browser menu and choose Settings. Open the Privacy & security tab, and you can choose to block all cookies or only third-party cookies under the Cookies heading. There's an extra setting on the same screen for blocking pop-up advertisements.
Apple Safari Privacy Settings