Cybersecurity · head to head
Cosign vs Securiti
Cosign
Cybersecurity
Signs and verifies container images and artifacts, with or without managing keys
- From
- Free
- Rated
- -
Securiti
Cybersecurity
Data and AI security posture management with privacy operations on a single data catalogue
- From
- On request
- Rated
- -
The short version
- Only Cosign has a free tier, so it costs nothing to try first.
- Each has a real cost: Cosign keyless signing inherits every weakness of the identity provider behind it. Sigstore’s own threat model states that if an identity provider is compromised, Sigstore will issue certificates to those identities, so a compromised account produces perfectly valid signatures.; Securiti value depends entirely on connector coverage and completed scanning, so the first useful data map commonly takes months and stalls whenever a data owner will not grant access to a system.
- They diverge on capability: Cosign covers Keyless signing, Securiti covers Sensitive data discovery.
- Prices and features above were last checked on 31 August 2026.
Where they differ
Only the attributes on which Cosign and Securiti actually diverge.
Identical on both: user rating (Not yet rated), category (Cybersecurity).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Cosign
- Keyless signing
- Key and KMS signing
- Registry-native storage
- In-toto attestations
- Offline verification
- Trusted root and signing config
Only in Securiti
- Sensitive data discovery
- Data security posture management
- Data access intelligence
- AI and LLM governance
- PrivacyOps
- Data flow governance
- Breach impact analysis
- People data graph
What people use each for
The jobs each tool is most often brought in to do.
Cosign
- Signing container images in a build pipeline without managing long-lived private keysnot Securiti
- Attaching a signed bill of materials to a release so consumers can verify its provenancenot Securiti
- Meeting a customer or regulatory requirement for signed artifactsnot Securiti
- Verifying third-party images before they enter an internal registrynot Securiti
Securiti
- An enterprise that must answer, within days of a breach, exactly whose regulated data was in the affected store and in which jurisdictionsnot Cosign
- A privacy team automating deletion requests across dozens of systems where the hard part is knowing where a person appears at allnot Cosign
- A security team that needs to find sensitive data sitting in over-permissive cloud buckets and warehouse tables before an auditor doesnot Cosign
- A company putting internal data into retrieval-augmented AI applications and needing to prove that regulated fields are not reaching the modelnot Cosign
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Cosign
- Keyless signing inherits every weakness of the identity provider behind it. Sigstore’s own threat model states that if an identity provider is compromised, Sigstore will issue certificates to those identities, so a compromised account produces perfectly valid signatures.
- A signature proves who signed, never whether they should have. The documentation is explicit that Sigstore cannot determine authorisation, so every consumer must write and maintain their own identity and issuer policy or verification means nothing.
- Nothing is enforced without an admission controller. Signing changes what you can prove, not what runs, and the official policy controller has a small maintainer base for a component sitting in a cluster admission path.
- Upgrades break pipelines. Version 3 changed defaults, version 4 is announced as removing legacy functionality and roughly half the command line flags, and two official client libraries still lacked support for the new log format as of mid 2026.
- Signatures do not expire. An artifact signed before a maintainer account was compromised and one signed after are indistinguishable unless somebody is actively monitoring the transparency log, and almost nobody is.
Securiti
- Value depends entirely on connector coverage and completed scanning, so the first useful data map commonly takes months and stalls whenever a data owner will not grant access to a system.
- Usage-based pricing tied to data volume means costs rise as the estate grows rather than as the security programme matures, and organisations with large but low-risk data lakes pay for scanning they do not need.
- The breadth across DSPM, privacy and AI governance means each individual module is competing with a specialist, and buyers who only need one of the three often find a focused tool does that job better for less.
- Classification accuracy on unstructured and free-text data requires tuning, and untuned deployments generate false positives that erode trust in the catalogue precisely when teams are being asked to act on it.
- Pricing is unpublished and modular, so scoping is difficult without a sales engagement and the eventual cost depends on module choices that are hard to evaluate before you have seen your own data map.
Pricing, plan by plan
Cosign
Free- CosignFree
- Apache-2.0
- Public Sigstore infrastructure free to use
- No usage limits published
Securiti
On request- Data and AI Command Centre$undefined/year
- Modular, usage based pricing quoted by data volume and modules selected
- Available through the AWS marketplace as well as direct
- Annual subscription with no fixed end date, cancellable
Which should you pick?
Choose Cosign if
- You need keyless signing.
- You want to start without paying.
- You work on macOS, Linux, Windows, Docker.
- You also want key and kms signing.
Choose Securiti if
- You need sensitive data discovery.
- You also want data security posture management.
Questions people ask
- Is Cosign or Securiti better?
- Neither clearly leads. Cosign starts at Free and Securiti at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Cosign or Securiti?
- Cosign has a free tier; the other does not. Paid plans start at Free for Cosign and On request for Securiti.
- Does Cosign or Securiti run on more platforms?
- Cosign runs on macOS, Linux, Windows, Docker. Securiti runs on Web.
- Can I use Cosign for free?
- Yes. Cosign has a free tier, so you can try it without paying. Securiti starts at On request.
- What is Cosign best used for?
- Cosign is most often used for signing container images in a build pipeline without managing long-lived private keys, attaching a signed bill of materials to a release so consumers can verify its provenance, meeting a customer or regulatory requirement for signed artifacts, verifying third-party images before they enter an internal registry. Of those, signing container images in a build pipeline without managing long-lived private keys and attaching a signed bill of materials to a release so consumers can verify its provenance are not what Securiti is typically brought in for.
- What can Cosign do that Securiti cannot?
- Cosign covers Keyless signing, Key and KMS signing, Registry-native storage, In-toto attestations. Securiti covers Sensitive data discovery, Data security posture management, Data access intelligence, AI and LLM governance.
Answered from the vendors’ own pages
Cosign: Does Cosign tell me if an image is vulnerable?
No. It has no vulnerability knowledge whatsoever. It can carry an SBOM as a signed attestation but never reads it. Pair it with a scanner.
Securiti: Is Securiti a DSPM tool or a privacy tool?
Both, deliberately. It runs data security posture management and privacy operations off one discovery catalogue, which is its main argument against buying two products.
Cosign: Is signing alone enough?
No. Verification is a command somebody runs. Without an admission controller enforcing it, an unsigned image still runs.
Securiti: What does it cost?
Not published. Pricing is modular and usage based, quoted by data volume and selected modules, and it is also available through the AWS marketplace.
Cosign: What does a bare cosign verify actually prove?
Very little. Without a pinned certificate identity and OIDC issuer, it accepts a valid signature from any identity at all.
Securiti: How long until it is useful?
Expect months, not weeks. The limiting factor is configuring connectors and getting access approvals to the systems you most want scanned.
Cosign: What is the risk of keyless signing?
Your OIDC provider becomes the root of trust. Compromise of that account yields genuine, verifiable signatures, so account security is the control that matters.
Securiti: Does it govern AI use?
Yes, it includes controls over data flowing into models and retrieval pipelines, which is increasingly the reason enterprises shortlist it.
Cosign: Should we expect breaking changes?
Yes. Version 4 is announced to remove roughly half the flags, and a post-quantum migration is named as a further breaking change after that.
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