Proton CEO Andy Yen urged engineers to use more AI after an employee requested additional time to security-test new code, according to an October 29, 2026 investigation by 404 Media. The report describes a leadership push to accelerate development at the privacy-focused company, alongside employees’ concerns about testing, their ability to challenge decisions and their jobs.
404 Media also reports that CTO Bart Butler told a meeting that AI had written 90% of Proton’s October code. That figure is an attributed internal claim, not an independently audited measure of the company’s software.
Proton’s response, delivered to 404 Media, acknowledged employee anxiety and shortcomings in how leadership communicated its plans. The dispute leaves a practical accountability question: what safeguards accompany the reported acceleration, and what evidence can customers use to assess them?
What 404 Media Reports About the Internal Push
404 Media’s Joseph Cox reports speaking with eight current Proton employees and one former employee, and reviewing Slack messages, meeting recordings and internal documents. Zeniteq has not independently reviewed those internal materials.
The investigation opens with an exchange in Proton’s security Slack channel at the end of August. According to 404 Media, an employee asked for at least a few days to penetration-test newly written code before deployment. Yen responded:
“That’s bullshit and loser thinking.”
404 Media reports that Yen said speed and security could coexist, told staff to concentrate on moving faster and urged them to use more AI instead of painstakingly writing all their code by hand.
The distinction matters. A disagreement about how long a particular test needs can be an ordinary engineering decision. The more consequential allegation here is that employees felt unable to raise technical concerns without risking a public rebuke or consequences for their employment. That account comes from 404 Media’s reporting, including its employee sources.
The outlet also reports that Proton installed software on workers’ computers to track AI-code generation and that Yen created an email address for employees to report obstacles to AI adoption.
An earlier 404 Media report, published October 26, described an internal email announcing that staff would be re-interviewed about their use of AI. The outlet reported that those interviews could affect continued employment. Together, the reports describe AI adoption as an employment and management policy, with consequences beyond the choice of coding tools.
