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Cybersecurity · head to head

Cosign vs Cybereason Defense Platform

Cosign logo

Cosign

Cybersecurity

Signs and verifies container images and artifacts, with or without managing keys

From
Free
Rated
-
Full reviewWebsite
Cybereason Defense Platform logo

Cybereason Defense Platform

Cybersecurity

AI-driven endpoint protection and detection

From
$50/year
Rated
-
Full reviewWebsite

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.; Cybereason Defense Platform no published pricing on any platform tier: three plan levels (Enterprise, Enterprise Advanced, Enterprise Complete) feature-differentiated but cost-free
  • They diverge on capability: Cosign covers Keyless signing, Cybereason Defense Platform covers Next-gen antivirus.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Cosign and Cybereason Defense Platform actually diverge.

Attributes where Cosign and Cybereason Defense Platform differ
AttributeCosignCybereason Defense Platform
Starting priceFree$50/year
Pricing modelOpen source, no licence feesubscription
Free tierYesNo
PlatformsmacOS, Linux, Windows, DockerWindows, Macos, Linux, Mobile
FoundedUnknown2012

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 Cybereason Defense Platform

  • Next-gen antivirus
  • Endpoint detection and response
  • Machine learning detection
  • Behavioral analysis
  • Threat hunting
  • Automated remediation
  • XDR integration
  • Ransomware protection

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 Cybereason Defense Platform
  • Attaching a signed bill of materials to a release so consumers can verify its provenancenot Cybereason Defense Platform
  • Meeting a customer or regulatory requirement for signed artifactsnot Cybereason Defense Platform
  • Verifying third-party images before they enter an internal registrynot Cybereason Defense Platform

Cybereason Defense Platform

  • Enterprise threat detection and response platformnot Cosign
  • Managed detection and response (MDR) servicesnot Cosign
  • Advanced cybersecurity for large organizationsnot 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.

Cybereason Defense Platform

  • No published pricing on any platform tier: three plan levels (Enterprise, Enterprise Advanced, Enterprise Complete) feature-differentiated but cost-free
  • MDR services cost hidden: tiered MDR inclusion (Essentials, Essentials+XR, Complete) does not disclose pricing per tier
  • Add-on pricing absent: incident response, DFIR, assessments, mobile defense, threat hunting marked as 'Add-On' with no pricing
  • Sales-gated all pricing: no budget range or starting price available; customers must book demo or contact sales

Pricing, plan by plan

Cosign

Free
  • CosignFree
    • Apache-2.0
    • Public Sigstore infrastructure free to use
    • No usage limits published

Cybereason Defense Platform

$50/year
  • Cybereason NGAV$50/year
    • Next-gen antivirus
    • Machine learning detection
    • Ransomware protection
  • Cybereason EDR$85/year
    • All NGAV features
    • Endpoint detection
    • Automated response
  • Cybereason Complete$150/year
    • All EDR features
    • Managed detection
    • 24/7 SOC support

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.
Cosign review

Choose Cybereason Defense Platform if

  • You need next-gen antivirus.
  • You work on Windows, Macos, Linux, Mobile.
  • You also want endpoint detection and response.
Cybereason Defense Platform review

Questions people ask

Is Cosign or Cybereason Defense Platform better?
Neither clearly leads. Cosign starts at Free and Cybereason Defense Platform at $50/year, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Cosign or Cybereason Defense Platform?
Cosign has a free tier; the other does not. Paid plans start at Free for Cosign and $50/year for Cybereason Defense Platform.
Does Cosign or Cybereason Defense Platform run on more platforms?
Cosign runs on macOS, Linux, Windows, Docker. Cybereason Defense Platform runs on Windows, Macos, Linux, Mobile.
Can I use Cosign for free?
Yes. Cosign has a free tier, so you can try it without paying. Cybereason Defense Platform starts at $50/year.
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 Cybereason Defense Platform is typically brought in for.
What can Cosign do that Cybereason Defense Platform cannot?
Cosign covers Keyless signing, Key and KMS signing, Registry-native storage, In-toto attestations. Cybereason Defense Platform covers Next-gen antivirus, Endpoint detection and response, Machine learning detection, Behavioral analysis.

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.

Cybereason Defense Platform: What are the Cybereason Enterprise pricing tiers?

Cybereason offers three tiers (Enterprise, Enterprise Advanced, Enterprise Complete) with different MDR service levels (MDR Essentials, MDR Essentials+XR, MDR Complete), but exact pricing is not published.

Source
Cosign: Is signing alone enough?

No. Verification is a command somebody runs. Without an admission controller enforcing it, an unsigned image still runs.

Cybereason Defense Platform: How much do add-on services cost (incident response, DFIR, threat hunting)?

Add-on services (incident response, DFIR, security assessments, mobile defense, threat hunting) are available across all plans but marked as 'Add-On' with no published pricing.

Source
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.

Cybereason Defense Platform: How do I get pricing from Cybereason?

Click 'Book a Demo' or 'Talk to a Cybereason Defender' on the website. Cybereason sales will discuss pricing, platform fit, and custom solutions based on your organization's needs.

Source
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.

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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