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Companies / isotope¹³ / Fastmail

Does isotope¹³ use Fastmail?

Yes

We hold strong evidence for this.

  • The company names it in its own subprocessor list, a statement that this vendor handles its customers' data.

How we know

Subprocessor listNamed as Fastmail Pty LtdProcesses data for the company11 Nov 2026Source

About isotope¹³

isotope¹³ sells supply-chain attack detection software that scans source code, binaries, firmware, containers and packages for malicious code. It serves SAST and SCA platforms, hardened image and library builders, distributions and registries, and firmware and binary analysts.

Summarized from its homepage on 11 Nov 2026.

Cybersecurity

What else isotope¹³ uses

isotope¹³ has evidence for 6 vendors. The strongest:

CloudflareHetznerIONOSStripe

See the full isotope¹³ tech stack

Other companies using Fastmail

AccountsPortalaccountsportal.comAuth57 Labsauth57.ioAuth57 Labsauth57labs.comdraw.ioHealthchecks.ioisotope¹³isotope13.iopassiv.comRenderFormrenderform.io

All 15 companies using Fastmail

Check any company's vendors in seconds

See isotope¹³'s full stack with a source for every vendor, and ask the same question about any company from the API, Claude or your browser.

  • Every company and vendor, with its public source
  • 100 API calls a month, plus MCP and the Chrome extension
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