Microsoft Chose Profit Over Security and Left U.S.GovernmentVulnerable to Russian [crackers], Whistleblower Says.

This shows the error of assuming that a proprietary program is going to be more secure than freesoftware, and why you should not systematically expect programs under the control of a companyto maintain your security. Even if it never seeks to attack you, it can have a motive to letyou down.

Side issues about terminology: the article uses misleading propaganda terms suchas "intellectualproperty"and "cloud", andsays "hackers" when it ought to say "crackers".