René Mayrhofer, a director at Google, has resigned from the company, citing a fundamental shift in the tech giant’s ethical stance. In a scathing resignation letter, he accused Google’s management of losing its “moral compass” and abandoning the principles laid out by CEO Sundar Pichai regarding the use of Artificial Intelligence.
Mayrhofer, who served as the Director of Android Platform Security, announced his departure on June 12, 2026, though his formal notice period extends until August 31, 2026. In his letter, he expressed disappointment that the company he joined in 2017 is no longer the transparent, ethically-driven organization he once admired.
Why the Google director resigned
In his note, titled “Google Management Has Lost Its Moral Compass,” Mayrhofer articulated two primary grievances. First, he alleged that Google leadership had “quietly abandoned” its goals to become carbon-neutral, a decision he attributed to the massive energy demands of the company’s AI systems.
Second, and most significantly, he condemned Google’s decision to sign a deal with the Pentagon to provide AI technology for classified government work, including military planning and intelligence operations. He argued that this collaboration directly violates the “AI principles” Pichai published in 2018, which explicitly ruled out developing weapons or technologies that could cause injury to people.
“With my moral and ethical principles, I cannot—explicitly or implicitly, directly or transitively—support the current and ongoing actions of the ‘Maximum lethality, not tepid legality’ US Ministry of War,” Mayrhofer wrote, referencing the Department of Defense. He added that the deal’s “any lawful purpose” clause has already been demonstrated to violate international laws and could potentially fuel mass surveillance.
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Internal dissent and ‘old Google’
Mayrhofer’s exit highlights the widening rift between the company’s leadership and its workforce, echoing similar internal protests from 2018 when Google canceled a previous Pentagon contract (Project Maven) due to employee pressure. He lamented that the culture of open discourse has faded, with recent decisions being made unilaterally by top management.
He pointed out that when he joined, “Don’t Be Evil wasn’t just a slogan… it was a north star for teams making hard calls.” Over 600 employees, including 20 directors and senior DeepMind researchers, signed a letter in April urging Pichai to refuse the classified deal, but the company moved forward regardless.
What’s next for Mayrhofer
Despite his resignation, Mayrhofer plans to stay on through August to hand over ongoing projects, stating he will disconnect from any work on AI systems linked to the Pentagon contract immediately. He intends to return to research focusing on privacy, encryption, and operating system security.
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