Former employee says software giant dismissed his warnings about a critical flaw because it feared losing government business. Russian hackers later used the weakness to breach the National Nuclear Security Administration, among others.

The federal government was preparing to make a massive investment in cloud computing, and Microsoft wanted the business. Acknowledging this security flaw could jeopardize the company’s chances, Harris recalled one product leader telling him. The financial consequences were enormous. Not only could Microsoft lose a multibillion-dollar deal, but it could also lose the race to dominate the market for cloud computing.

Harris said he pleaded with the company for several years to address the flaw in the product, a ProPublica investigation has found. But at every turn, Microsoft dismissed his warnings

his fears became reality. U.S. officials confirmed reports that a state-sponsored team of Russian hackers had carried out SolarWinds, one of the largest cyberattacks in U.S. history. They used the flaw Harris had identified to vacuum up sensitive data from a number of federal agencies, including, ProPublica has learned, the National Nuclear Security Administration, which maintains the United States’ nuclear weapons stockpile, and the National Institutes of Health, which at the time was engaged in COVID-19 research and vaccine distribution. The Russians also used the weakness to compromise dozens of email accounts in the Treasury Department, including those of its highest-ranking officials. One federal official described the breach as “an espionage campaign designed for long-term intelligence collection.”

Harris’ account, told here for the first time and supported by interviews with former colleagues and associates as well as social media posts, upends the prevailing public understanding of the SolarWinds hack.

the board’s report identified a “corporate culture that deprioritized both enterprise security investments and rigorous risk management.”

ProPublica’s investigation adds new details and pivotal context about that culture, offering an unsettling look into how the world’s largest software provider handles the security of its own ubiquitous products. It also offers crucial insight into just how much the quest for profits can drive those security decisions, especially as tech behemoths push to dominate the newest — and most lucrative — frontiers, including the cloud market.

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