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Cybersecurity · head to head

Sigstore vs VMware Carbon Black

Sigstore logo

Sigstore

Cybersecurity

Free public signing and transparency infrastructure for open source artifacts

From
Free
Rated
-
Full reviewWebsite
V

VMware Carbon Black

Cybersecurity

Cloud-delivered endpoint protection and EDR, now owned by Broadcom and positioned alongside Symantec.

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Sigstore has a free tier, so it costs nothing to try first.
  • Each has a real cost: Sigstore the security model depends on somebody watching the log. The documentation states that compromise of an identity provider or of Fulcio itself is detectable only if third parties monitor the transparency log, the monitoring tool is a community-tier rather than core project, and almost no consumer runs one.; VMware Carbon Black broadcom's enterprise model concentrates direct sales and support on its largest accounts and moves everyone else to resellers, so a mid-size customer can lose named support contacts and face a substantially repriced renewal with limited notice.
  • They diverge on capability: Sigstore covers Fulcio, VMware Carbon Black covers Endpoint Standard.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Sigstore and VMware Carbon Black actually diverge.

Attributes where Sigstore and VMware Carbon Black differ
AttributeSigstoreVMware Carbon Black
Starting priceFreeOn request
Pricing modelOpen source, public instance free to usesubscription
Free tierYesNo
PlatformsWeb, Linux, macOS, Windows, Self-hostedDesktop, Api
FoundedUnknown2002

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 Sigstore

  • Fulcio
  • Rekor
  • Keyless signing
  • Multi-language clients
  • Timestamp authority
  • Neutral governance

Only in VMware Carbon Black

  • Endpoint Standard
  • Enterprise EDR
  • Audit and Remediation
  • Single sensor
  • Live Response
  • Workload protection
  • Container security
  • Watchlists and feeds

What people use each for

The jobs each tool is most often brought in to do.

Sigstore

  • Open source projects signing releases without running a certificate authoritynot VMware Carbon Black
  • Organisations meeting a signed-artifact requirement without buying a signing productnot VMware Carbon Black
  • Publishing provenance that a consumer can verify independently of younot VMware Carbon Black
  • Self-hosting the same components where a public log is unacceptablenot VMware Carbon Black

VMware Carbon Black

  • A SOC that wants unfiltered endpoint telemetry to hunt over rather than only vendor-generated alertsnot Sigstore
  • A vSphere estate that wants workload protection deployed through the hypervisor instead of installing an agent in every guestnot Sigstore
  • Replacing signature antivirus after an incident where the incumbent product had no record of what the attacker didnot Sigstore
  • An organisation already inside a Broadcom or Symantec enterprise agreement that can consolidate endpoint onto an existing contractnot Sigstore

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Sigstore

  • The security model depends on somebody watching the log. The documentation states that compromise of an identity provider or of Fulcio itself is detectable only if third parties monitor the transparency log, the monitoring tool is a community-tier rather than core project, and almost no consumer runs one.
  • It is a 99.5 percent objective with no service level agreement, which permits several hours of downtime a month and offers no remedy. A pipeline that signs on every build has taken a hard dependency on a free service with no contract behind it.
  • Log scale is a live engineering problem rather than a theoretical one. The active shard holds billions of entries, the log has already been sharded twice, and sharding version 1 requires stopping traffic, which is why a replacement was built.
  • Ten-minute certificates make trust depend on log availability. Verifying an older signature relies on the log entry proving it was made inside that window, so a lost or unreachable entry can render a valid artifact unverifiable.
  • Migration debt is substantial and ongoing. Version 2 of the log is generally available but not the public default, the signing client has an announced breaking release ahead, some official clients lag the new log format, and a post-quantum migration is named as the next break after that.

VMware Carbon Black

  • Broadcom's enterprise model concentrates direct sales and support on its largest accounts and moves everyone else to resellers, so a mid-size customer can lose named support contacts and face a substantially repriced renewal with limited notice.
  • Continuous EDR recording is retained for a defined window and longer retention is a paid tier, so the investigation you most need is often the one whose telemetry has already aged out, and that is discovered during the incident rather than before it.
  • The product assumes an operator: watchlists, policy tuning and alert triage are ongoing work, and organisations without a dedicated analyst or an MDR contract typically leave policies in monitor mode and pay for telemetry that is never reviewed.
  • The sensor operates in the same kernel and file-filter territory as other endpoint agents, so running it alongside an incumbent antivirus, DLP or backup agent commonly produces performance complaints and requires maintained exclusion lists on both sides.
  • Linux sensor support is tied to specific distribution and kernel versions, so a routine operating system upgrade can leave hosts without a supported sensor until a matching build ships, and anything outside the supported list gets no coverage at all.

Pricing, plan by plan

Sigstore

Free
  • Public good instanceFree
    • Free to everyone with no contract
    • 99.5 percent availability objective, not an agreement
    • 100KB cap per attestation upload
  • Self-hostedFree
    • Apache-2.0
    • Run your own Fulcio and Rekor
    • Rekor v2 available for self-hosters

VMware Carbon Black

On request
  • CB Endpoint StandardFree
    • NGAV
    • Behavioral EDR
    • Device control
  • CB Endpoint AdvancedFree
    • All Standard features
    • Threat hunting
    • Audit and remediation
  • CB Endpoint EnterpriseFree
    • All Advanced features
    • Advanced threat hunting
    • Live response

Which should you pick?

Choose Sigstore if

  • You need fulcio.
  • You want to start without paying.
  • You work on Web, Linux, macOS, Windows, Self-hosted.
  • You also want rekor.
Sigstore review

Choose VMware Carbon Black if

  • You need endpoint standard.
  • You work on Desktop, Api.
  • You also want enterprise edr.
VMware Carbon Black review

Questions people ask

Is Sigstore or VMware Carbon Black better?
Neither clearly leads. Sigstore starts at Free and VMware Carbon Black at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Sigstore or VMware Carbon Black?
Sigstore has a free tier; the other does not. Paid plans start at Free for Sigstore and On request for VMware Carbon Black.
Does Sigstore or VMware Carbon Black run on more platforms?
Sigstore runs on Web, Linux, macOS, Windows, Self-hosted. VMware Carbon Black runs on Desktop, Api.
Can I use Sigstore for free?
Yes. Sigstore has a free tier, so you can try it without paying. VMware Carbon Black starts at On request.
What is Sigstore best used for?
Sigstore is most often used for open source projects signing releases without running a certificate authority, organisations meeting a signed-artifact requirement without buying a signing product, publishing provenance that a consumer can verify independently of you, self-hosting the same components where a public log is unacceptable. Of those, open source projects signing releases without running a certificate authority and organisations meeting a signed-artifact requirement without buying a signing product are not what VMware Carbon Black is typically brought in for.
What can Sigstore do that VMware Carbon Black cannot?
Sigstore covers Fulcio, Rekor, Keyless signing, Multi-language clients. VMware Carbon Black covers Endpoint Standard, Enterprise EDR, Audit and Remediation, Single sensor.

Answered from the vendors’ own pages

Sigstore: Is the public instance really free?

Yes, with no contract and no paid tier. That is also the weakness: a 99.5 percent objective with no agreement, no remedy and support through Slack.

VMware Carbon Black: Who owns Carbon Black now?

Broadcom. It acquired VMware in November 2023, and Carbon Black now sits in Broadcom's enterprise security business alongside Symantec. VMware branding is being phased out.

Sigstore: Has the public log moved to Rekor v2?

No. Version 2 reached general availability in October 2025 and self-hosters can use it, but the public instance still defaults to version 1 and the project has said it will for the foreseeable future.

VMware Carbon Black: Why do the docs use names I do not recognise?

The product has been renamed repeatedly. CB Defense is now Endpoint Standard, CB ThreatHunter is Enterprise EDR and CB LiveOps is Audit and Remediation. Older community answers and runbooks still use the previous names.

Sigstore: Does Sigstore make my dependencies safe?

No, and this is a category error worth avoiding. It tells you who published something. It has no knowledge of what the artifact contains or whether it is vulnerable.

VMware Carbon Black: Does it replace my existing antivirus?

Yes on supported Windows, macOS and Linux versions, and running it alongside another antivirus is not recommended because the two agents contend for the same hooks. Check your compliance requirements, as some auditors still ask for a named antivirus product.

Sigstore: What are the rate limits?

Not published. Only the 100KB cap per attestation upload is documented, so do not design a high-volume pipeline around assumed throughput.

VMware Carbon Black: Do I need a full-time analyst to run it?

To get value from Enterprise EDR, effectively yes. The prevention tier can run with part-time attention, but the hunting and recording capability is only worth its cost if somebody is querying it, which is why many customers buy it through an MDR provider.

Sigstore: Should we self-host it?

If a public record of every signature is unacceptable, or if a free service with no agreement cannot sit in your build path, then yes. Otherwise the public instance is what most projects use.

VMware Carbon Black: How is it licensed?

Per endpoint, per year, with the capability tier determining the rate and workload and container protection priced separately. Extended EDR data retention is an additional line item.

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