Tessian, formerly known as CheckRecipient and founded in the UK in 2013, was built to stop highly sensitive emails from being sent to the wrong recipient; later acquired by Proofpoint. AI-generated from public sourcesThe starting point for every profile: auto-generated by 0-Doubt from public vendor materials, and not yet confirmed by the vendor or an independent analyst. Nothing here is hidden or overstated — it simply has not been reviewed yet.Where every profile starts, before the vendor or an analyst has reviewed it. A higher label means a more independent source — not a better product.How trust works →
Tools & products
Showing the 12 closest of 287 — .
Integrates with: Adaptive ↗, Hornetsecurity ↗, Microsoft ↗, Proofpoint ↗, Satori ↗, Threat Intelligence ↗
Integrated by: Nagomi Security, ThreatAware
1 of 5 independent trust signals established
Tessian has one dimension with established evidence. The rest have not been confirmed yet.
Not yet established: Independently verified · Behaviour under stress · Disclosure posture · Momentum
Has anyone other than the vendor confirmed this?
1 independent source(s) corroborate this vendor's claims.
Is this a real, durable business?
How long this vendor has been operating, and who stands behind them.
Certifications & compliance claimsWhat the tiers meanVerified in a public registry — we confirmed this against an authoritative public registry (FedRAMP Marketplace, CSA STAR) and re-check it by the registry's own identifier. Stated by the vendor — the vendor says it on a page they control; a sourced claim about themselves, not an independent check. Detected on a page — found during automated enrichment, neither registry-confirmed nor stated on the vendor's own site.
Some certifications have no public registry at all — SOC 2 and HIPAA among them. For those, “not registry-verified” is not a shortfall and means nothing about the vendor.
Detected on a page
Security headers (5/5) — checked 10/18/2026
Not a quality rating or endorsement — a measure of how much verified, disclosed data we actually have about this vendor. A low score usually means "we don't have much verified information yet," not "this is a bad vendor." Never used to sort or rank vendor lists.
The platform admin controls the formula's weights.
Product information on this page is auto-generated by 0-Doubt from public sources and not yet confirmed by the vendor or an independent analyst, unless an item is individually labelled otherwise. How trust works →
What do they do when something goes wrong?
What their public record shows about handling vulnerabilities and outages.
Do they tell you the awkward things unprompted?
How much this vendor volunteers before you have to ask.
Are they still shipping, or coasting?
Whether this vendor is visibly still building.
Nothing checked here yet — this is not a mark against Tessian.
Infrastructure & transparency signals