# Pusher

[64 tracked vendors](https://thirdpartyindex.com/vendors/pusher#used-by) name Pusher as a subprocessor, including [Zendesk](https://thirdpartyindex.com/vendors/zendesk), [GitHub](https://thirdpartyindex.com/vendors/github) and [Pylon](https://thirdpartyindex.com/vendors/pylon). Pusher is part of [Bird](https://thirdpartyindex.com/vendors/bird), whose subprocessor list declares [22 subprocessors](https://thirdpartyindex.com/vendors/bird#subprocessors), which we last checked on 2026-11-11. We have not found a separate list published by Pusher.

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

- Page: https://thirdpartyindex.com/vendors/pusher
- Documents last verified: 2026-11-11
- Category: developer-tools
- Transparency rating: 24/100 (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 0/12 (not found); Trust center 0/8 (not found); Privacy policy 0/6 (not found); security.txt 6/6; Security page 5/5; Status page 5/5; Vulnerability disclosure 0/5 (not found); Pages still reachable 8/8
- Part of: [Bird](https://thirdpartyindex.com/vendors/bird)
- Supply chain: relies on 0 tracked vendors directly, 0 within two hops, 0 within three; 64 tracked vendors rely on it directly, 1115 within two hops, 2813 within three
- Cite as: Pusher, Third Party Index, https://thirdpartyindex.com/vendors/pusher (data CC BY 4.0)

## Documents

| Document | URL | Last verified | Last changed |
|---|---|---|---|
| Security page | https://pusher.com/security/ | 2026-11-11 | 2026-09-22 |
| security.txt | https://pusher.com/.well-known/security.txt | 2026-11-11 | 2026-09-22 |
| Status page | https://status.pusher.com/ | 2026-11-11 | 2026-11-11 |
| Trust center (parent company's) | https://trust.bird.com/ | 2026-11-11 | 2026-10-30 |
| Subprocessor list (parent company's) | https://bird.com/legal/subprocessors | 2026-11-11 | 2026-10-26 |
| Data processing addendum (parent company's) | https://bird.com/legal/dpa | 2026-11-11 | 2026-10-26 |
| Privacy policy (parent company's) | https://bird.com/legal/privacy | 2026-11-11 | 2026-10-26 |
| Terms (parent company's) | https://bird.com/legal/website-terms-of-use | 2026-11-11 | 2026-10-26 |

## Subprocessors (0)

It publishes no list of its own; its parent company Bird lists 22: https://thirdpartyindex.com/vendors/bird.md

## Web Technologies

Pusher's homepage made 57 requests to 11 domains, and 3 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.

3 third parties by category: Analytics 2 (HubSpot, Google Cloud); CMS 1 (Prismic). 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 (3)

- Prismic: 18 requests to prismic.io; Prismic
- HubSpot: 6 requests to hs-analytics.net, hs-banner.com, hs-scripts.com, hsadspixel.net, hubapi.com, hubspot.com; HubSpot, HubSpot Analytics
- Google Cloud: 3 requests to doubleclick.net, googletagmanager.com; Google Analytics, Google Tag Manager

### Affiliates (1)

- Bird: 4 requests to messagebird.com

### First party (1)

- Pusher: 26 requests to pusher.com; Amazon CloudFront, Amazon Web Services, FingerprintJS, Gatsby 5.8.1, HSTS, Loadable-Components, Nginx 1.27.5, Open Graph, React, Webpack, core-js 3.29.1, styled-components 5.3.9

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

## Subprocessor of (64)

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

- [Ada Support](https://thirdpartyindex.com/vendors/ada-support.md): Realtime Processing
- [AirCall](https://thirdpartyindex.com/vendors/aircall.md)
- [Arctic Wolf](https://thirdpartyindex.com/vendors/arctic-wolf.md): WebSocket Support
- [Blissbook](https://thirdpartyindex.com/vendors/blissbook.md): Real-time events
- [Buffer](https://thirdpartyindex.com/vendors/buffer.md)
- [BugHerd](https://thirdpartyindex.com/vendors/bugherd.md): Websocket messaging platform
- [CallHippo](https://thirdpartyindex.com/vendors/callhippo.md): Send Realtime live events to browser
- [Candex](https://thirdpartyindex.com/vendors/candex.md): Websocket Push Service
- [Clarify](https://thirdpartyindex.com/vendors/clarify.md): Realtime Updates
- [Clickagy](https://thirdpartyindex.com/vendors/clickagy.md): Real-time messaging services
- [Composio](https://thirdpartyindex.com/vendors/composio.md): Realtime trigger delivery to SDK/CLI channels; receives trigger event payloads.
- [Conga](https://thirdpartyindex.com/vendors/conga.md): API Service
- [Deskpro](https://thirdpartyindex.com/vendors/deskpro.md): Programmatic push notifications Server Location: US Website: https://www.pusher.com
- [Domo](https://thirdpartyindex.com/vendors/domo.md): Messaging, notification, and communication delivery services
- [Double](https://thirdpartyindex.com/vendors/double.md): Outreach and communication
- [EvaluAgent](https://thirdpartyindex.com/vendors/evaluagent.md): In-App Messaging
- [Explorium](https://thirdpartyindex.com/vendors/explorium.md): Real-time messaging services
- [Fathom](https://thirdpartyindex.com/vendors/fathom.md): In-App Communication
- [FireHydrant](https://thirdpartyindex.com/vendors/firehydrant.md): Real-time browser updates
- [Flowmailer](https://thirdpartyindex.com/vendors/flowmailer.md): Processing of chat conversations for Engage Chat; Sending notifications from our async services (e.g., model training)
- [Forethought Technologies](https://thirdpartyindex.com/vendors/forethought-technologies.md): Real Time Processing
- [fynk](https://thirdpartyindex.com/vendors/fynk.md): Providing realtime components for the web application
- [Geckoboard](https://thirdpartyindex.com/vendors/geckoboard.md): Websockets services
- [GitHub](https://thirdpartyindex.com/vendors/github.md): Building and managing real-time infrastructure for web and mobile applications
- [Help Scout](https://thirdpartyindex.com/vendors/help-scout.md): Real-time services
- [Instantly](https://thirdpartyindex.com/vendors/instantly.md): Engineering; Real-time messaging services
- [InvestorFlow](https://thirdpartyindex.com/vendors/investorflow.md): Realtime communication platform
- [Knak](https://thirdpartyindex.com/vendors/knak.md): Push notifications
- [Level AI](https://thirdpartyindex.com/vendors/level-ai.md)
- [Loadster](https://thirdpartyindex.com/vendors/loadster.md): Real-time Messaging
- [MangoApps](https://thirdpartyindex.com/vendors/mangoapps.md): Real-time messaging channels — chat, presence, live notifications
- [Marker.io](https://thirdpartyindex.com/vendors/marker-io.md): Infrastructure
- [NeverBounce](https://thirdpartyindex.com/vendors/neverbounce.md): Real-time messaging services
- [Noonlight](https://thirdpartyindex.com/vendors/noonlight.md): Cloud Services – Managed WebSockets
- [Personify Health](https://thirdpartyindex.com/vendors/personify-health.md)
- [Pipeline CRM](https://thirdpartyindex.com/vendors/pipeline-crm.md): Communications; Real-time in-app updates (Channels) and push notifications (Beams)
- [Pitch](https://thirdpartyindex.com/vendors/pitch.md): API service for adding real-time bi-directional
- [PlanetScale](https://thirdpartyindex.com/vendors/planetscale.md): Real-time Notification Service
- [Productboard](https://thirdpartyindex.com/vendors/productboard.md): Realtime communication services
- [Pylon](https://thirdpartyindex.com/vendors/pylon.md): API hosting
- [Qobra](https://thirdpartyindex.com/vendors/qobra.md): Encrypted websocket API; Infrastructure
- [Reamaze](https://thirdpartyindex.com/vendors/reamaze.md): Live messaging function between customers and end-users.
- [RingCentral](https://thirdpartyindex.com/vendors/ringcentral.md): Websockets as a service real time in Event Messaging
- [SnapEngage](https://thirdpartyindex.com/vendors/snapengage.md): Provision of communication services between customer and customer’s end-users and realtime update on responsive webpages.
- [Spark Hire](https://thirdpartyindex.com/vendors/spark-hire.md)
- [Subscribe Pro](https://thirdpartyindex.com/vendors/subscribe-pro.md): Messaging Platform
- [Superchat](https://thirdpartyindex.com/vendors/superchat.md)
- [Superside](https://thirdpartyindex.com/vendors/superside.md)
- [Teamtailor](https://thirdpartyindex.com/vendors/teamtailor.md): Communication between the Service backend and web client.
- [Textline](https://thirdpartyindex.com/vendors/textline.md): Real-Time Notifications
- [Trengo](https://thirdpartyindex.com/vendors/trengo.md): Realtime Notification Service
- [Trumpet](https://thirdpartyindex.com/vendors/trumpet.md): Cloud Computing Platform (PaaS); \[Required\] API Software
- [Tungsten Automation](https://thirdpartyindex.com/vendors/tungsten-automation.md): Event Notification Services; Tungsten Service(s): Printix
- [Unbabel](https://thirdpartyindex.com/vendors/unbabel.md): Notification manager
- [Vezgo](https://thirdpartyindex.com/vendors/vezgo.md): Real-time notifications that tell the connection screen when a provider login is finished, so the popup window can close on its own.
- [Vonage](https://thirdpartyindex.com/vendors/vonage.md): To provide real-time communication capabilities for the Livechat module using WebSocket technology.; To push live updates, including new messages, chat status c…
- [Wonderchat](https://thirdpartyindex.com/vendors/wonderchat.md): Live Chat notification provider. Read more about their GDPR Compliance policy here: https://bird.com/en/legal/terms
- [ZeeMee](https://thirdpartyindex.com/vendors/zeemee.md)
- [Zendesk](https://thirdpartyindex.com/vendors/zendesk.md): Supports live event handling and messaging services for system-wide notifications.
- [Zeplin](https://thirdpartyindex.com/vendors/zeplin.md): Pusher process Zeplin data through US-based datacenters only.; Zeplin uses Pusher to enable real-time communications between the Zeplin servers and the client A…
- [zkipster](https://thirdpartyindex.com/vendors/zkipster.md)
- [ZoomInfo](https://thirdpartyindex.com/vendors/zoominfo.md): Real-time messaging services
- [Zuddl](https://thirdpartyindex.com/vendors/zuddl.md): Real time publish subscribe
- [Zuplo](https://thirdpartyindex.com/vendors/zuplo.md): Zuplo uses Pusher to deliver real time notifications to the portal.

## Service status

Incidents it reported on its own status page.

- Last 90 days: 2 reported incidents (0 major or critical, 0 minor, 2 with no impact stated)
- Typical time to resolve: 3 h 44 min
- Status page last read: 2026-11-12
- 2026-08-23: Elevated Errors on us2 (no impact stated)
- 2026-08-22: Elevated errors on us2 cluster (no impact stated)
- 2026-04-06: Intermittent API errors in US2 cluster (minor)
- 2026-03-31: Cluster SA1: Delayed Channels webhook delivery on SA1 cluster (minor)
- 2026-02-15: Increased error rate on the US2 cluster (no impact stated)
- 2026-01-29: Errors increase for API in cluster us3 (no impact stated)
- 2026-01-26: Increased error rate on the US2 cluster impacting presence events (no impact stated)
- 2026-01-22: Incorrect subscription changes affecting some accounts (no impact stated)

## Security contact

From its security.txt (https://pusher.com/.well-known/security.txt) ([evidence](https://thirdpartyindex.com/evidence/3835)):

- Contact: https://hackerone.com/messagebird
- Contact: mailto:security@messagebird.com
- Security jobs: https://messagebird.com/en/careers/
- No expiry date

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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