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Proton CEO Andy Yen Advances AI-First Engineering After Pentest Dispute

October 29, 2026 at 11:04 EDT

Software Dev & Coding
Sales & Business

Proton CEO Andy Yen is urging engineers to make AI systems produce better code, while reportedly rebuking a staff request to penetration-test new code before release. Proton’s CTO also told staff that AI wrote 90% of the company’s code in October, with much of it produced using Anthropic’s Claude.

OCTOBER 2026 · PROTON

AI-first engineering meets a release check

Yen’s engineering push centers on guiding AI-generated code. A reported 90% share puts the shift in focus as a request for pre-release penetration testing draws resistance.

REPORTED AI-WRITTEN CODE

90%

October figure attributed to Proton’s CTO. The definition and measurement method were not provided.

9 of 10 segments

A proportional display of the reported share; it does not identify who or what produced the remainder.

The productivity case

The manifesto calls routine production coding drudgery and says documentation and testing have often been neglected.

The release question

A staff request for a pre-release penetration test was reportedly dismissed. The material gives no security results for the workflow.

A code share is not a quality score

No measurement method, review rate, code-quality results, or security outcomes were included with the 90% figure.

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