Viewing profile — cipherjim
cipherjim
HN member- Joined
- Sun, Jul 19, 2026, 11:05 AM UTC
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About cipherjim
James Sadler
Principal Engineer at CipherStash (cipherstash.com)
Based in Sydney, Australia.
Previously: Founder & Technical Director at Alembic (alembic.com.au).
Recent public activity
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Comment #48967553
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Comment #48967533
You basically reverse-engineered it correctly. I've written up the full threat model, components and per-index leakage in one place here: https://news.ycombinator.com/item?id=48967…
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Comment #48967481
James here, principal engineer at CipherStash. A few of you have (fairly) pointed out that the threat model is hard to find on our site, so rather than answer piecemeal let me lay …