Microsoft's Security Products Will Block Adware By Default Starting On July 1

An anonymous reader writes "Microsoft [Thursday] announced a change to how it handles adware, a form of malware that pushes unwanted advertisements to the user. As of July 1, the company's security products will immediately stop any adware they detect and notify the user, who can then restore the program if they wish. Currently, when any of Microsoft's security products (including Microsoft Security Essentials and Microsoft Forefront) detects a program as adware, it will alert the user and offer them a recommended action. If the user doesn't do anything, the security product will let the program continue to run until the user makes a decision." If adware is malware, why wait until July?