# Notion: Incident updated: Security update: Preventative certificate security measures

> Incident updated: Security update: Preventative certificate security measures. Detected 2026-10-23 by Rewindex: what changed on Notion’s status page, with the before/after diff.

Canonical: https://rewindex.com/change/r65713726e1280f
Last updated: 2026-10-23T00:23:09Z

**Summary:** _summary pending_
- Kind: Incident update · Label: Normal progress (rule)
- Changed: 2026-10-23 00:23 UTC · Detected: 2026-10-23 00:23 UTC
- [Source: https://www.notion-status.com/incidents/01M5DAZNPJ8FSBQWMJKE39QH9N](https://www.notion-status.com/incidents/01M5DAZNPJ8FSBQWMJKE39QH9N)
- [Company: Notion](https://rewindex.com/company/notion.md)
- Versions: before incident\_version:110/01M5DAZNPJ8FSBQWMJKE39QH9N@8e5914b0fed5 → after incident\_version:110/01M5DAZNPJ8FSBQWMJKE39QH9N@c7cd9427d308
- Change 1 of 2 for this incident

Incident page (full timeline): [Security update: Preventative certificate security measures](https://rewindex.com/company/notion/incidents/01M5DAZNPJ8FSBQWMJKE39QH9N.md)
## What changed

**1. Changed: Status**

```diff
- investigating
+ monitoring
```

**2. Added: Update** (monitoring) · 2026-10-23 00:17 UTC

```diff
+ We are aware of the security issue involving eMudhra, a third-party certificate authority used to verify secure internet connections. Our security and engineering teams assessed potential exposure and proactively updated affected software and certificate bundles across our services and applications. We did not find any evidence that Notion has been compromised in connection with this issue.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-10-23 00:23 UTC | Incident updated: Security update: Preventative certificate security measures (this change) | Normal progress |
| 2026-10-26 18:33 UTC | [Incident updated: Security update: Preventative certificate security measures](https://rewindex.com/change/r688aad61780eb1.md) | Normal progress |

Next: [change](https://rewindex.com/change/r688aad61780eb1.md) · All Notion changes: [timeline](https://rewindex.com/company/notion/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._

## Cite this

Incident updated: Security update: Preventative certificate security measures on Notion’s status page, changed 2026-10-23 00:23 UTC (change 1 of 2).

- Canonical URL: https://rewindex.com/change/r65713726e1280f
- Citation: Notion, “Incident updated: Security update: Preventative certificate security measures” (2026-10-23 00:23 UTC). Archived by Rewindex: https://rewindex.com/change/r65713726e1280f (CC BY 4.0).
- Markdown link: `[Notion: Incident updated: Security update: Preventative certificate security measures (2026-10-23)](https://rewindex.com/change/r65713726e1280f)`


---
Canonical: https://rewindex.com/change/r65713726e1280f · Markdown: https://rewindex.com/change/r65713726e1280f.md · JSON: https://rewindex.com/api/v1/changes/r65713726e1280f · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-11T04:59:30.395Z