Go to the Webroot install webpage.
Click webroot download now.
In the bottom right corner of the screen, click Downloads and select wsamac.dmg.
Double-click the Webroot SecureAnywhere icon.
In the pop-up, click Open.
In the Webroot SecureAnywhere pop-up, select your preferred language, and click Next.
Enter your keycode and click Agree and Install.
Enter your Macintosh User Name and Password, then click OK.
Click Open System Preferences. The System Preferences window will open.
Under Security and Privacy, click Privacy.
Enter your Macintosh User Name and Password, then click Unlock.
To the right of the apps list, click the "+" button. A new window will appear.
Click Applications.
Ensure the checkbox next to Webroot SecureAnywhere is checked.
Return to the Webroot SecureAnywhere window, and click Next.
Click Install Extension then Click Finish.