Cloud file conversion security model (S3-only, 24h retention)

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Hi HN — I’m building Docpose.cloud (online file conversion + API). File processing is a trust problem, so I wrote a security + processing architecture page that explains exactly how files move through the system. Highlights: S3-only pipeline: workers read from object storage and write results back No permanent local disk persistence on workers Source files deleted immediately after processing Converted files expire after 24 hours by default Operational logs kept up to 30 days (metadata only, no file contents) I’m posting this because security questions come up every time someone evaluates file-processing infrastructure. Feedback welcome — especially on what you’d want clarified for a vendor security review.

Visit product View on Hacker NewsFeb 27, 2026

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40%40% predicted probability of success on Hacker News, based on ML models trained on real launch data.

nativeThis product was originally launched on this platform.

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33%33% predicted probability of success on TrustMRR, based on ML models trained on real launch data.

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32%32% predicted probability of success on AppSumo, based on ML models trained on real launch data.

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1%1% predicted probability of success on BetaList, based on ML models trained on real launch data.

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