Sphinx HTML and 17-page LaTeX PDF for the audit-ready pack

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+Peergos verification (what was actually audited)
+================================================
+
+This chapter records **sourced** facts. It does **not** turn Peergos, Verae,
+or DataCubes into a HIPAA, SOC 2, or ISO 27001 certificate.
+
+Claim to check
+--------------
+
+Data at rest is stored in an encrypted append-only Peergos filesystem;
+backup/restore is managed via a distributed, hashed, encrypted Peergos
+IPFS system, designed and evaluated in the EU as an audited secure
+filesystem.
+
+Independent security audits (Europe)
+------------------------------------
+
+**2019 — Cure53 (Berlin, Germany).**
+Pentest, source-code audit, **crypto/design review** (May–June 2019).
+No fundamental architectural or cryptographic problems; issues fixed.
+Cure53: the platform **passed this evaluation**.
+
+**2024 — Radically Open Security B.V. (Amsterdam, Netherlands).**
+Crystal-box pentest + code audit of Peergos web-ui (Sep–Nov 2024).
+**0** extreme / high / elevated; **2** moderate, **6** low; Peergos
+states all fixed; no data exposure or integrity compromise (mostly UI
+crashes).
+
+Both firms are **EU-based**. Both full reports are **public**. That is a
+**security evaluation of the Peergos protocol/implementation**, not a
+HIPAA/SOC 2/ISO management-system certificate.
+
+.. only:: html
+
+   Primary sources:
+
+   * https://peergos.org/posts/security-audit
+   * https://cure53.de/pentest-report_peergos.pdf
+   * https://peergos.org/posts/security-audit-2024
+   * https://github.com/Peergos/Peergos/tree/master/audits
+
+EU funding / NLnet
+------------------
+
+* Peergos received funding from the **European Union Horizon 2020**
+  programme under **NGI-POINTER**, grant **871528** (stated on the 2024
+  audit post).
+* The 2024 audit was supported by **NLnet** (Netherlands).
+
+Hosted instance location
+------------------------
+
+Peergos’s hosted privacy notice states peergos.net uses servers in
+**Germany**. **Self-hosted ns1 / customer cryptree is a different
+processing location** and must be documented in *your* RoPA / BAA pack.
+
+Encrypted filesystem + hashed IPFS (design)
+-------------------------------------------
+
+* **Cryptree**: tree of symmetric keys; fine-grained read/write caps;
+  sibling names hidden; writes **signed**.
+* **Chunks**: up to 5 MiB, padded, independently encrypted
+  (Salsa20-Poly1305); random 256-bit keys (not convergent).
+* **IPFS**: content-addressed blocks. Peergos **verifies the hash** of
+  every block read from or written to IPFS. Clients verify hashes and
+  signatures from a Peergos server.
+* **CHAMP**: encrypted cryptree nodes under **random 32-byte labels**.
+* Sharing: hybrid **X25519 + ML-KEM-1024**.
+
+“Append-only” in Verae DataCubes is the **cube chain JSONL** (application
+integrity). Peergos uses signed updates and immutable blocks. Do not
+conflate the two layers in an audit interview.
+
+Not verified / do not claim
+---------------------------
+
+* “Peergos is HIPAA certified” — **false.** HIPAA is not a product certificate.
+* “Peergos is SOC 2 / ISO 27001 certified” — **not shown.** Published
+  work is pentest/code audit, not Type II or ISO registrar.
+* “EU certified Peergos as a government-standard filesystem” —
+  **overstated.** What exists: EU grant funding, NLNet-funded ROS
+  pentest, Cure53 Berlin design+code audit.
+* “Hosts with disk/backup never need a BAA/DPA” — **legal conclusion,
+  not a technical fact.** See :doc:`baa-dpa`.