# StackOne

[2 tracked vendors](https://thirdpartyindex.com/vendors/stackone#used-by) name StackOne as a subprocessor, including [Drata](https://thirdpartyindex.com/vendors/drata) and [Attensi](https://thirdpartyindex.com/vendors/attensi). We have not found a subprocessor list published by StackOne. We monitor 5 of its documents, which we last checked on 2026-11-11.

StackOne (stackone.com): subprocessors, data processing agreement, security documents and changes, as monitored by Third Party Index.

- Page: https://thirdpartyindex.com/vendors/stackone
- Documents last verified: 2026-11-11
- Transparency rating: 39/100 (how much it publishes, not how secure it is): Subprocessor list 0/30 (not found); Processing locations 0/8 (no list); Purposes 0/7 (no list); Data processing addendum 12/12; Trust center 8/8; Privacy policy 6/6; security.txt 0/6 (not found); Security page 0/5 (not found); Status page 5/5; Vulnerability disclosure 0/5 (not found); Pages still reachable 8/8
- Supply chain: relies on 0 tracked vendors directly, 0 within two hops, 0 within three; 2 tracked vendors rely on it directly, 29 within two hops, 124 within three
- Cite as: StackOne, Third Party Index, https://thirdpartyindex.com/vendors/stackone (data CC BY 4.0)

## Documents

| Document | URL | Last verified | Last changed |
|---|---|---|---|
| Trust center | https://trust.stackone.com/ | 2026-11-11 | 2026-11-11 |
| Data processing addendum | https://www.stackone.com/terms/dpa/ | 2026-11-11 | 2026-10-28 |
| Privacy policy | https://www.stackone.com/terms/privacy-notice/ | 2026-11-11 | 2026-10-28 |
| Terms | https://www.stackone.com/terms/website-terms-and-conditions/ | 2026-11-11 | 2026-10-28 |
| Status page | https://status.stackone.com/ | 2026-11-11 | 2026-11-10 |

## Subprocessors (0)

No subprocessor list has been found or read for this vendor.

## Web Technologies

StackOne's homepage made 179 requests to 21 domains, and 9 services controlled by another company. Loaded on 2026-11-05 by a browser that accepted nothing; other visits may load more or less. What a page loads is not a list of who receives customer data.

9 third parties by category: Analytics 7 (Google Cloud, Reo.Dev, LinkedIn, Cloudflare, RB2B; usually detected as Analytics: G2.com, posthog); Marketing automation 1 (HubSpot); Cookie compliance 1 (CookieYes). Each company that appears controlled by another organization is counted once, under the main category of the technologies detected from it on this homepage or, when none was, the category recorded from the company's own page (marked reviewed) or else the one it is usually detected as on other published homepages (marked as such); unclassified: none of these.

### Third parties (9)

- CookieYes: 10 requests to cdn-cookieyes.com, cookieyes.com; CookieYes
- HubSpot: 8 requests to hscollectedforms.net, hs-analytics.net, hs-banner.com, hs-scripts.com, hsadspixel.net, hubapi.com, hubspot.com; HubSpot
- Google Cloud: 6 requests to googletagmanager.com, google-analytics.com, googlesyndication.com; Google Analytics, Google Tag Manager
- Reo.Dev: 5 requests to reo.dev; Reo.Dev
- LinkedIn: 3 requests to linkedin.com, licdn.com; Linkedin Insight Tag
- G2.com: 2 requests to g2.com
- Cloudflare: 1 request to cloudflareinsights.com; Cloudflare Browser Insights
- RB2B: 1 request to ddwl4m2hdecbv.cloudfront.net; RB2B
- posthog: 1 request to posthog.com

### First party (1)

- StackOne: 142 requests to stackone-logos.com, stackone.com; Astro, Cloudflare, HSTS, HTTP/3, Open Graph, PostHog, Priority Hints

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

## Subprocessor of (2)

Tracked vendors whose own subprocessor lists name it, and what they say they use it for.

- [Attensi](https://thirdpartyindex.com/vendors/attensi.md): Processing for user provisioning and reporting when integrating with third-party systems
- [Drata](https://thirdpartyindex.com/vendors/drata.md): \[Drata\] \[Opt-in\] If configured to integrate with a customer's SaaS integrations, StackOne provides a unified API that allows the integrations with and syncing d…

## Service status

Incidents it reported on its own status page.

- Last 90 days: 0 reported incidents (0 major or critical, 0 minor, 0 with no impact stated)
- Status page last read: 2026-11-12
- No incidents reported in the last 12 months
- 2026-08-11: Increased API Error Rates in EU-WEST-1 (major)
- 2026-07-03: Failures displaying project data in the dashboard (major)
- 2026-05-28: Occasional periodic slowness on EU1 API instance (minor)
- 2026-03-06: Increased errors reported for Actions call (via RPC endpoint or other interfaces) (minor)

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Third Party Index (https://thirdpartyindex.com) monitors vendors' public security and privacy documents and keeps each version as evidence. Data CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/); vendors' own documents are theirs. API: https://thirdpartyindex.com/api