Microsoft really blew it, says government report on Chinese hacks

• Microsoft's security systems are inadequate and need an "overhaul," a government report found.
• Security flaws in Microsoft's systems let Chinese hackers breach the company's networks last summer, DHS found.
• Microsoft needs to seriously improve its systems for the sake of national security, the report says.

Microsoft's security culture needs work, a government-backed cybersecurity board says in a new report.

And the tech giant's lackluster security allowed a group of hackers associated with China to breach the company's networks, including senior US officials' emails, in a preventable attack last summer, the report says.