Cybersecurity · head to head
Cosign vs CrowdStrike Falcon
Cosign
Cybersecurity
Signs and verifies container images and artifacts, with or without managing keys
- From
- Free
- Rated
- -
CrowdStrike Falcon
Cybersecurity
Stop breaches with AI-native cybersecurity
- From
- Free
- Rated
- -
The short version
- 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.; CrowdStrike Falcon falcon Go device limit: capped at 100 devices maximum, forcing mid-market/enterprise customers to upgrade despite lower cost
- They diverge on capability: Cosign covers Keyless signing, CrowdStrike Falcon covers Next-gen antivirus.
- Prices and features above were last checked on 2 September 2026.
Where they differ
Only the attributes on which Cosign and CrowdStrike Falcon actually diverge.
| Attribute | Cosign | CrowdStrike Falcon |
|---|---|---|
| Pricing model | Open source, no licence fee | subscription |
| Platforms | macOS, Linux, Windows, Docker | Windows, macOS, Linux |
| Founded | Unknown | 2011 |
Identical on both: starting price (Free), free tier (Yes), 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 CrowdStrike Falcon
- Next-gen antivirus
- Endpoint detection and response
- Threat intelligence
- IT hygiene
- USB device control
- Firewall management
- Threat graph
- Real-time response
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 CrowdStrike Falcon
- Attaching a signed bill of materials to a release so consumers can verify its provenancenot CrowdStrike Falcon
- Meeting a customer or regulatory requirement for signed artifactsnot CrowdStrike Falcon
- Verifying third-party images before they enter an internal registrynot CrowdStrike Falcon
CrowdStrike Falcon
- Endpoint detection and response for enterprise cybersecuritynot Cosign
- Malware prevention and threat huntingnot Cosign
- Managed detection and response (MDR) servicesnot 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.
CrowdStrike Falcon
- Falcon Go device limit: capped at 100 devices maximum, forcing mid-market/enterprise customers to upgrade despite lower cost
- EDR locked behind Enterprise tier: endpoint detection and response available only at $19.99/device/month tier; not available in Pro
- Managed service pricing opaque: Falcon Complete Next-Gen MDR requires contacting sales; no pricing range for 24/7 MDR services published
- Annual discount modest: 17-24% savings on annual vs. monthly create minimal incentive to prepay
Pricing, plan by plan
Cosign
Free- CosignFree
- Apache-2.0
- Public Sigstore infrastructure free to use
- No usage limits published
CrowdStrike Falcon
Free- Falcon Go$undefined/mo
- Falcon Pro$undefined/mo
- Falcon Enterprise$undefined/mo
- Falcon Complete Next-Gen MDR$undefined/mo
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 CrowdStrike Falcon if
- You need next-gen antivirus.
- You want to start without paying.
- You work on Windows, macOS, Linux.
- You also want endpoint detection and response.
Questions people ask
- Is Cosign or CrowdStrike Falcon better?
- Neither clearly leads. Cosign starts at Free and CrowdStrike Falcon at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Cosign or CrowdStrike Falcon?
- Cosign starts at Free and CrowdStrike Falcon at Free.
- Does Cosign or CrowdStrike Falcon run on more platforms?
- Cosign runs on macOS, Linux, Windows, Docker. CrowdStrike Falcon runs on Windows, macOS, Linux.
- Can I use Cosign for free?
- Both have a free tier, so you can try either at no cost before committing.
- 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 CrowdStrike Falcon is typically brought in for.
- What can Cosign do that CrowdStrike Falcon cannot?
- Cosign covers Keyless signing, Key and KMS signing, Registry-native storage, In-toto attestations. CrowdStrike Falcon covers Next-gen antivirus, Endpoint detection and response, Threat intelligence, IT hygiene.
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.
CrowdStrike Falcon: How much does CrowdStrike Falcon cost per device?
Falcon Go costs $7.99/device/month ($59.99/year), Falcon Pro costs $14.99/device/month ($99.99/year), and Falcon Enterprise costs $19.99/device/month ($184.99/year).
SourceCosign: Is signing alone enough?
No. Verification is a command somebody runs. Without an admission controller enforcing it, an unsigned image still runs.
CrowdStrike Falcon: What is the device limit for Falcon Go?
Falcon Go is limited to a maximum of 100 devices. Organizations with more than 100 devices must upgrade to Pro or Enterprise tiers.
SourceCosign: 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.
CrowdStrike Falcon: What is the difference between Falcon Pro and Enterprise?
Falcon Pro ($14.99/device/month) includes firewall management and advanced device control. Falcon Enterprise ($19.99/device/month) adds endpoint detection and response (EDR), threat hunting services, and expert threat intelligence.
SourceCosign: 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.
CrowdStrike Falcon: How much does the managed detection and response service cost?
Falcon Complete Next-Gen MDR pricing is custom. It provides 24/7 expert-led detection and response with AI acceleration and continuous investigations by expert threat teams. Contact CrowdStrike sales for a quote.
SourceCosign: 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.
Related pages
More on CrowdStrike Falcon
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- CrowdStrike Falcon vs Cybereason Defense Platform
- CrowdStrike Falcon vs Microsoft Defender for Endpoint
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