1 Sign in. Go to http://my.kaspersky.com/MyDevices and choose Sign In. 2 Sign in. 3 In the tab Devices click ‘Protect New Device’. 4 Click ‘Download’ under Internet Security for Mac. 5 Execute the download. 6 If you get a warning click ‘Open’. 7 Click ‘Download’ and Install. 8 Enter your admin details. 9 Click ‘Finish’. The installation is complete.