VendorScore · Comparison · Data-access posture
Evidence dated 2026-10-06 to 2026-10-07, public docs only, not legal advice.
Short answer
Both can read your docs by design, and neither offers end-to-end encryption. In the scored configurations, Confluence (Atlassian, 63/100) has less inherent vendor read access than Notion (51/100), mainly because Atlassian's customer-managed keys let you hold and revoke the root key and its support engineers need your explicit consent, while Notion's customer-managed key option isn't publicly documented.
Higher score = less inherent vendor read access in the scored configuration, not a more secure product. Each score comes from that vendor's VendorScore page.
| Notion | Atlassian (Jira & Confluence) | |
|---|---|---|
| Overall score | 51/100 | 63/100 |
| Scored configuration | Notion Business/Enterprise with published security controls (AES-256 at rest, TLS in transit). | Jira, Jira Service Management and Confluence Cloud Enterprise with the Customer-managed keys (CMK) add-on (customer AWS KMS). |
| Key custody option | Notion/KMS-managed keys (AES-256 at rest). The Trust Center mentions customer-managed key infrastructure, but enrollment and revoke behaviour aren't publicly documented. | Customer-managed keys (paid Cloud Enterprise add-on, new sites): root key in your AWS KMS, revocable and logged in CloudTrail. The Confluence search index and email notifications stay on Atlassian-managed keys. |
| E2EE / CSE scope | None; Notion makes no public E2EE or zero-knowledge claim for pages and databases. | None: Atlassian still decrypts content to run the product, with or without customer-managed keys. |
| AI training default (scored config) | Not used for training by default. Notion says that by default neither it nor its AI subprocessors use Customer Data to train any models. | Not fully stated. Atlassian doesn't share customer data with third-party LLM providers for training; it may fine-tune its own models on de-identified, aggregated metadata, subject to a data contribution setting whose default isn't stated. |
| EU residency | Enterprise Plan: page content, uploaded files and the search index at rest in the EU (Frankfurt, backups in Ireland); account data and LLM processing aren't covered. | Yes: Confluence and Jira on Standard, Premium or Enterprise can pin in-scope data to the EU (Frankfurt + Dublin) and other locations; user account data is out of scope. |
| DPA link | Notion DPA | Atlassian DPA |
Dimension scores (key custody, plaintext access, encryption claims, subprocessors, auditability) stay in the full PDFs.
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No. Notion encrypts data at rest with AES-256 and in transit with TLS 1.2+ using Notion/KMS-managed keys, with no public E2EE or zero-knowledge claim. Atlassian encrypts Confluence data at rest with AES-256 and in transit with TLS 1.2+; with or without customer-managed keys, Atlassian still decrypts content to run the product.
In the scored configurations, Atlassian (Jira & Confluence) scores 63/100 (Cloud Enterprise with the customer-managed keys add-on) and Notion 51/100 (Business/Enterprise with published security controls), so Confluence has less inherent vendor read access. Without CMK, the report estimates Atlassian at about 55 overall.
Notion says employees will only ever access your data to troubleshoot problems or recover content on your behalf; that's a policy limit, not a cryptographic one. Atlassian accesses hosted data for application health monitoring and system maintenance or on your support request, and its support engineers need your explicit consent through a consent control checker before accessing customer data.
Notion says that by default neither it nor its AI subprocessors use Customer Data to train any models. Atlassian says it doesn't share customer data with third-party LLM providers for training, but may fine-tune open-source models in its own infrastructure on de-identified, aggregated metadata, subject to data contribution settings whose default isn't stated.
Notion uses LLMs from providers including Anthropic and OpenAI, and says those providers use zero data retention for Enterprise Plan workspaces. When Atlassian Intelligence or Rovo is enabled, Atlassian's AI processors include AWS Bedrock, Google Vertex AI and OpenAI, and its LLM partners operate under zero data retention agreements.
Notion's Enterprise Plan stores page content, uploaded files and the search index at rest in the EU (Frankfurt, with backups in Ireland); account and usage data and LLM processing aren't covered. Atlassian can pin in-scope Confluence data to the EU (Frankfurt + Dublin) on Standard, Premium or Enterprise; user account data is out of scope.
Every URL cited on this page. Scores, configurations and facts come from the linked VendorScore vendor pages and their reports; nothing here goes beyond them.
This comparison restates the vendor pages for the scored configurations only; default setups usually score lower. A higher score means less inherent vendor read access in that configuration, not a safety rating. VendorScore doesn't certify compliance. Public-docs review only. Not a pen test, not legal advice, not a SOC 2 substitute.