Trello

trello.com · Part of Atlassian

9 tracked vendors name Trello as a subprocessor, including Black Forest Labs, Frill and Termly. Trello is part of Atlassian, whose subprocessor list declares 41 subprocessors, which we last checked on Nov 11, 2026. We have not found a separate list published by Trello.

Documents marked from Atlassian are Atlassian's.

Subprocessors

Covered by Atlassian's list (41).

Web TechnologiesCSV · Atom

Trello's homepage made 134 requests to 10 domains, and 4 services controlled by another company.

Tag managers (1): Google CloudCookie compliance (1): OneTrustOther (2): reviewed as Digital asset management: Orange Logic; usually detected as Personalisation: Contentful

4 third parties by category: Tag managers 1Cookie compliance 1Other 2

Third parties 4 · 98 requests
Contentful ctfassets.net 46% of the page's requests 62
Google Cloud Google Tag Manager reCAPTCHA 13% of the page's requests 17
OneTrust OneTrust 8% of the page's requests 11
Orange Logic orangelogic.com 6% of the page's requests 8
Affiliates 1 · 32 requests
Atlassian atlassian.com, atl-paas.net 24% of the page's requests 32
First party 1 · 4 requests
Trello Amazon CloudFront Amazon Web Services Contentful HSTS HTTP/3 React React Router 6 Sentry Statsig 3.30.2 styled-components 6.1.19 3% of the page's requests 4

3 tracked companies loaded by the homepage are not in Trello's subprocessor list. A website can use a service without it processing customer data.

Subprocessor of (9)CSV · Atom

9 companies
  • Black Forest Labs bfl.ai
  • CodeAnt AI codeant.ai Product management tools
  • Frill frill.co Project Management
  • Kulturra.com kulturra.com Project management
  • Qless qless.com
  • Relay Commerce relaycommerce.io
  • Skedda skedda.com Collaboration; Used only by the Skedda sales team to help manage the sales process with Skedda leads and other prospective Skedda customers (venue System admins and Owners).
  • Snowfire AI snowfire.ai
  • Termly termly.io Work Management

Security recordCSV · Atom

What public security catalogs list for Trello, in their words.

Data breaches

  • Trello 15,111,945 accounts Email addresses; Names; Usernames

    In January 2024, data was scraped from Trello and posted for sale on a popular hacking forum. Containing over 15M email addresses, names and usernames, the data was obtained by enumerating a publicly accessible resource using email addresses from previous breach corpuses. Trello advised that no unauthorised access had occurred.

    Have I Been Pwned

Breach data: Have I Been Pwned (CC BY 4.0), which calls every entry a breach, including data scraped from public pages (evidence)

Service statusCSV · Atom

Aug 15: no incident reportedAug 16: no incident reportedAug 17: no incident reportedAug 18: no incident reportedAug 19: no incident reportedAug 20: no incident reportedAug 21: no incident reportedAug 22: no incident reportedAug 23: no incident reportedAug 24: no incident reportedAug 25: no incident reportedAug 26: no incident reportedAug 27: no incident reportedAug 28: no incident reportedAug 29: no incident reportedAug 30: no incident reportedAug 31: no incident reportedSep 1: no incident reportedSep 2: no incident reportedSep 3: no incident reportedSep 4: no incident reportedSep 5: no incident reportedSep 6: no incident reportedSep 7: no incident reportedSep 8: no incident reportedSep 9: no incident reportedSep 10: no incident reportedSep 11: no incident reportedSep 12: no incident reportedSep 13: no incident reportedSep 14: no incident reportedSep 15: no incident reportedSep 16: no incident reportedSep 17: no incident reportedSep 18: no incident reportedSep 19: no incident reportedSep 20: no incident reportedSep 21: no incident reportedSep 22: no incident reportedSep 23: no incident reportedSep 24: no incident reportedSep 25: no incident reportedSep 26: no incident reportedSep 27: no incident reportedSep 28: no incident reportedSep 29: no incident reportedSep 30: no incident reportedOct 1: no incident reportedOct 2: no incident reportedOct 3: no incident reportedOct 4: no incident reportedOct 5: no incident reportedOct 6: no incident reportedOct 7: no incident reportedOct 8: no incident reportedOct 9: no incident reportedOct 10: no incident reportedOct 11: no incident reportedOct 12: no incident reportedOct 13: no incident reportedOct 14: no incident reportedOct 15: no incident reportedOct 16: no incident reportedOct 17: no incident reportedOct 18: no incident reportedOct 19: no incident reportedOct 20: no incident reportedOct 21: no incident reportedOct 22: no incident reportedOct 23: no incident reportedOct 24: no incident reportedOct 25: no incident reportedOct 26: no incident reportedOct 27: no incident reportedOct 28: no incident reportedOct 29: no incident reportedOct 30: no incident reportedOct 31: no incident reportedNov 1: no incident reportedNov 2: no incident reportedNov 3: no incident reportedNov 4: no incident reportedNov 5: no incident reportedNov 6: no incident reportedNov 7: no incident reportedNov 8: no incident reportedNov 9: no incident reportedNov 10: no incident reportedNov 11: no incident reportedNov 12: no incident reported

90 days agotoday

  • 0 incidents in 90 days
  • 0 major or critical
BeganIncidentImpactLasted
Trello - degraded performanceminor9 days
Trello - degraded performance (resolved)minor2 h 50 min
Users experiencing issues accessing multiple Atlassian productscritical1 h 23 min
Multiple Atlassian services are experiencing issuesminor8 h 55 min
Trello Slow or down for usersmajor1 min
Degraded performance of Trellominor15 min
Trello performance is degradedno impact stated15 min
Outbound Email, Mobile Push Notifications, and Support Ticket Delivery Impacting All Cloud Productscritical37 min

Incidents per month

0 2 4 Dec 2025: 2 incidents (2 critical) · typical time to resolve 1 h 1 min Jan 2026: 0 incidents Feb 2026: 3 incidents (1 major, 1 minor, 1 no impact stated) · typical time to resolve 15 min Mar 2026: 0 incidents Apr 2026: 0 incidents May 2026: 4 incidents (1 critical, 3 minor) · typical time to resolve 8 h 55 min Jun 2026: 0 incidents Jul 2026: 0 incidents Aug 2026: 0 incidents Sep 2026: 0 incidents Oct 2026: 0 incidents Nov 2026: 0 incidents Dec 2025Jan 2026Feb Mar Apr May Jun Jul Aug Sep Oct Nov

critical major minor no impact stated

As Trello's status page reports its own incidents (scheduled maintenance left out), read every few hours since (evidence)

ChangesCSV · Atom

None since tracking began.

Rating badge for Trello's site

Trello transparency rating

It updates with the rating.

<a href="https://thirdpartyindex.com/vendors/trello"><img src="https://thirdpartyindex.com/badge/trello.svg" alt="Trello transparency rating on Third Party Index" height="20"></a>
[![Trello transparency rating on Third Party Index](https://thirdpartyindex.com/badge/trello.svg)](https://thirdpartyindex.com/vendors/trello)