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Technologies / Certn / Slack

Companies using Certn and Slack

6 companies in our data have public evidence for both Certn and Slack, and 6 name both in their own subprocessor list. Each company below links to the source for every claim. Our coverage is partial, so this is not everyone.

6companies use both
67%of Certn users
under 1%of Slack users
6name both as subprocessors

Companies using one are 8.3 times as likely as the average company in our data to show evidence of the other.

The companies

Strongest evidence first: a company naming both in its own subprocessor list comes before one seen on its website or in job postings.

Subprocessor listPrivacy policyWebsiteJob postings

CompanyCertnSlack
909Cyber909cyber.com909Cyber provides hiring fraud verification, a talent marketplace, and security consultancy services.CybersecurityHR and recruiting
Arboretum LifeSciencesarboretum.bioArboretum provides genetic testing programs for cardiovascular disease, cancer, and metabolic conditions.Biotech and life sciencesHealthcare
Conductorconductor.buildConductor runs a team of coding agents in the cloud, with isolated sandboxes for each agent.AI and machine learningDeveloper tools
Projexionprojexion.ioProjexion provides construction analytics software that combines data from tools such as Procore, Sage, and P6 into unified KPIs, dashboards, and automated briefings.ConstructionData and analytics
Unbaneunbane.comUnbane provides a phone-based communications layer that turns spoken field reports into structured records for construction jobs.ConstructionProductivity and collaboration
Nashusenash.comNash provides a logistics platform for planning, routing, dispatching, and tracking deliveries.Logistics and supply chain

The two technologies

Certn is a background screening company whose products include criminal record checks, identity verification, and employment and education verification. It is used by employers and organizations to screen candidates and workers before and after hiring.

Summarized from certn.co on 8 Nov 2026.

67% of the 9 companies we see using Certn also show the other.

All 9 companies using Certn9 name it as a subprocessorMore in HR

Slack

by Salesforce · Productivity

Slack is a collaboration platform where teams chat, share files, and work together in channels. It is used for team communication, connecting apps and agents, and automating everyday work.

Summarized from slack.com on 8 Nov 2026.

under 1% of the 2,059 companies we see using Slack also show the other.

All 2,059 companies using Slack1,428 name it as a subprocessorMore in Productivity

Other pairs

Companies with their own evidence for both.

More with Certn

Cloudflare9companiesGoogle Workspace7companiesVanta5companies

More with Slack

Cloudflare1,931companiesGoogle Workspace1,672companiesAmazon Web Services1,374companiesStripe964companiesGoogle Tag Manager922companiesGoogle874companies

Questions

How many companies use both Certn and Slack?

6 companies in StrataDB's data have public evidence for both, and 6 of them name both in their own subprocessor list, the strongest evidence we hold. Our coverage is partial, so the real number is higher.

Which companies use Certn and Slack?

909Cyber, Arboretum LifeSciences, Conductor, Projexion and Unbane, and 1 more company. Each one links to the evidence behind it.

How does StrataDB know a company uses Certn and Slack?

From four kinds of public evidence: subprocessor lists, privacy policies, website code and job postings. Each is kept apart with its source and the date we saw it. A company missing here means we found no evidence, not that it does not use them.

Find every company using Certn and Slack

See the full list with the source for each company, and run the same lookup for any technology from the API, Claude or your browser.

  • Every company and vendor, with its public source
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