CISO Tribune

Company record · security vendor

Chainguard CISO: Quincy Castro

CISO Tribune company record: Chainguard, seat filled, since week of July 28, 2025

The current Chief Information Security Officer (CISO) of Chainguard, as tracked by CISO Tribune, is Quincy Castro, whose appointment was announced in the week of July 28, 2025 (SecurityWeek Industry Moves (week of 2025-07-28)). Previously CISO at Redis. Read the record. The record entered the Wire on .

Career profile: Quincy Castro on CISO Spotlights ↗

Tracked by the Wire since July 28, 2025 · 1 recorded move · every claim links to a sourced record · Updated

Where Chainguard appears on the record (28)

Every page on CISO Tribune and its network that carries this company, 28 in all.

On the Wire
Career profile
Compared with (25)

vs Anchore, vs Apiiro, vs Aqua Security, vs Archipelo, vs Arnica, vs Cycode, vs Endor Labs, vs Finite State, vs GitHub Advanced Security, vs GitLab, vs JFrog, vs Legit Security, vs Minimus, vs Neo, vs OX Security, vs Phoenix Security, vs Pluto Security, vs Prime Security, vs RapidFort, vs Red Hat, vs Snyk, vs Socket, vs Sonatype, vs Trail of Bits, vs Veracode

In the vendor directory

About Chainguard

CISO Tribune's Leadership Bench files Chainguard under Cybersecurity Vendors and North America. The Wire has one security-leadership move at Chainguard on record, announced in the week of July 28, 2025.

Security leadership timeline

2025-07-28

Quincy Castro named Chief Information Security Officer (CISO) at Chainguard

Chainguard named Quincy Castro as its Chief Information Security Officer.

What Quincy Castro has said in public

CISO Tribune's Voices section carries 2 public posts and talks by Quincy Castro. The most recent are listed with their dates.

Quincy Castro's record

Security chiefs at other Cybersecurity Vendors organizations

Other organizations CISO Tribune files under Cybersecurity Vendors with a named security chief on record: those in North America first, in alphabetical order from Chainguard onward.

  • Checkmarx: Kobi Sivilya, Chief Information Security Officer and Chief Information Officer.

  • Cognition: Alex Stamos, Chief Information Security Officer.

  • Concentric AI: Lane Sullivan, Chief Information Security and Strategy Officer.

  • Cyberhaven: Aman Sirohi, Chief Information Security Officer.

  • Cylerity: Drew McCombs, Chief Technology Officer and Chief Information Security Officer.

  • DefenseStorm: William Wetherill, Chief Information Security Officer.

  • EigenQ: Alexander Truskovsky, Chief Information Security Officer.

  • Fable Security: Jacob Berry, Chief Information Security Officer.

The full Cybersecurity Vendors bench

What the company sells

Chainguard sells hardened open source artifacts that replace vulnerable or malicious versions found publicly. Chainguard says it aims to eliminate malware and vulnerability risk across containers, dependencies, CI/CD actions and AI agent skills. Chainguard hardens open source before developers start writing a single line of code.

Chainguard offers container images for over 3,000 projects, and hundreds of Helm charts, rebuilt continuously by AI reconciler agents in a SLSA Level 3 environment. Every Chainguard image ships with Sigstore signatures, a signed SBOM and SLSA L2 provenance. Chainguard Factory tracks upstream changes, triggers clean rebuilds and publishes new images with updated SBOMs and provenance. Custom Assembly configures Chainguard Factory to build images to a customer's specifications, using 30,000+ packages. Chainguard gives direct access to the APKs underpinning entitled Chainguard Containers. Chainguard offers updated EOL images with low-to-zero CVEs for up to 6 months to help teams transition off legacy software. Chainguard extends its secure-by-default standard to commercial ISV software.

Chainguard offers over 1,200 FIPS-validated container variants and OS-level STIG hardening for regulated environments. Chainguard says zero-CVE images, signed SBOMs and full provenance simplify compliance across frameworks like FedRAMP, PCI DSS, SOC 2, CMMC and CRA. Chainguard says PCI DSS vulnerability management requirements create significant overhead for vendors handling cardholder data. Chainguard says Shift5 saved 2.5 months of engineering time per person on CVE remediation. Chainguard says Canva dodged hundreds of thousands of malware attacks on npm and PyPI. Chainguard says the Army Software Factory freed up 40% of developer time for mission-enabling innovation.

Chainguard Libraries is a malware-free catalog of open source dependencies. Chainguard offers a catalog of Python, Java, JavaScript, Go and .NET packages so teams can turn off live access to public registries. Chainguard says customers switch standard registry endpoints to Chainguard to prevent malware and shrink the CVE backlog. Chainguard Libraries works with existing artifact managers and workflows. Chainguard says every Chainguard-built version comes with full provenance and signed SBOMs. Chainguard says every remediated package includes embedded SLSA L3 provenance and SBOMs. Chainguard says every package is scanned for malicious behavior before distribution. Chainguard Repository provides every package needed on day one and lets customers configure cooldowns.

Chainguard VMs are minimal Linux images based on Chainguard OS and come in three types. Chainguard VMs include only the essential components for running containers: a Linux kernel, systemd, glibc, and optional userspace tools like SSH. Chainguard VMs support AWS, Azure, Google Cloud and on-premise hypervisors including VMware, Nutanix and OpenStack. Chainguard VMs carry a CVE remediation SLA of 7 days for critical and 14 days for high, medium, and low through automated rebuilds. Chainguard VMs support kernel-independent FIPS 140-3-validated cryptography. Chainguard VMs offer DISA STIG hardening and CIS Benchmark Level 1 hardening.

Chainguard offers 30,000+ zero-CVE packages, including every package powering Chainguard Containers. Chainguard says secure packages can be swapped in whether a team builds with Bazel, Melange, Dockerfiles or another tool. Chainguard says every artifact ships with build-time generated SBOMs. Chainguard OS Packages has a FIPS variant built with the latest versions of Chainguard's FIPS-validated cryptographic modules. Chainguard offers a catalog of 1,000+ hardened third-party actions. Chainguard Actions are drop-in replacements for upstream GitHub Actions. Chainguard re-verifies and rehardens every action whenever its upstream version changes or a new attack pattern emerges. Every Chainguard Action ships with a full hardening report. Chainguard Guardener analyzes and rebuilds Dockerfiles layer by layer, maps packages and tests incrementally. Guardener opens a migration pull request for all actions with a drop-in Chainguard equivalent. Chainguard offers 1,000+ hardened community skills that are safe from malicious instructions.

Chainguard says reconciler bots and AI agents run continuously across its entire catalog. Chainguard says every package is rebuilt from source in an isolated SLSA L3 environment on its own minimal OS. Chainguard says every build starts with an immutable SHA reference to the upstream source. Chainguard says it signs every artifact it ships. Chainguard says every image is rebuilt with a separate apko toolchain to produce a bitwise-equivalent result.

Chainguard Checks runs CI inside Chainguard microVMs that produce cryptographically signed attestations. Chainguard Checks is currently in beta and is a Technology Preview. Chainguard Workspaces isolates untrusted code inside Chainguard-hardened microVMs. Chainguard Workspaces is currently in beta and is a Technology Preview. Chainguard Harness builds an application from source in an isolated environment and lets Mythos 5.1 hunt through a live instance for exploitable vulnerabilities. Chainguard Harness is currently in beta and is a Technology Preview.[1][4][6][10][11][12][13][14][15][16][17][18][19][20]

Categories
Headquarters
Not established from our sources
Founded
Not established from our sources
Ownership
Privately held[2][3][5][9]
CISO on record
Quincy Castro, Chief Information Security Officer (CISO) (appointment announced in the week of July 28, 2025)
Website
chainguard.dev

Products and services

Product names as the company writes them; what each does, in our words, from the company's own product pages. Never how well it does it.

  • Chainguard Containers[7][10][14]

    Container images for over 3,000 projects, rebuilt continuously.

    Chainguard offers container images for over 3,000 projects, and hundreds of Helm charts, rebuilt continuously in a SLSA Level 3 environment. Custom Assembly configures Chainguard Factory to build images to a customer's specifications. Chainguard offers over 1,200 FIPS-validated container variants and OS-level STIG hardening for regulated environments. Every Chainguard image ships with Sigstore signatures, a signed SBOM and SLSA L2 provenance.

  • Chainguard Libraries[12]

    A malware-free catalog of open source dependencies.

    Chainguard Libraries is a malware-free catalog of open source dependencies. Chainguard offers a catalog of Python, Java, JavaScript, Go and .NET packages. Chainguard Libraries works with existing artifact managers and workflows.

  • Chainguard VMs[13]

    Minimal Linux virtual machine images based on Chainguard OS.

    Chainguard VMs are minimal Linux images based on Chainguard OS and come in three types. Chainguard VMs support AWS, Azure, Google Cloud and on-premise hypervisors including VMware, Nutanix and OpenStack. Chainguard VMs carry a CVE remediation SLA of 7 days for critical and 14 days for high, medium, and low through automated rebuilds.

  • Chainguard OS Packages[14]

    30,000+ zero-CVE packages for building custom images.

    Chainguard offers 30,000+ zero-CVE packages, including every package powering Chainguard Containers. Chainguard OS Packages has a FIPS variant built with the latest versions of Chainguard's FIPS-validated cryptographic modules.

  • Chainguard Actions[15]

    A catalog of 1,000+ hardened third-party actions.

    Chainguard Actions are drop-in replacements for upstream GitHub Actions. Every Chainguard Action ships with a full hardening report.

  • Chainguard Guardener[10]

    A migration tool that rebuilds Dockerfiles layer by layer.

    Chainguard Guardener analyzes and rebuilds Dockerfiles layer by layer, maps packages and tests incrementally. Guardener opens a migration pull request for all actions with a drop-in Chainguard equivalent.

  • Chainguard Workspaces[19]

    Chainguard-hardened microVMs that isolate untrusted code.

    Chainguard Workspaces isolates untrusted code inside Chainguard-hardened microVMs. Chainguard Workspaces is currently in beta and is a Technology Preview.

Competitors and alternatives

The other companies on our record filed under the same categories, category by category: first those that lead with that category and share more of Chainguard's categories, then alphabetical. A list from the record, never a ranking.

What review platforms show

The headline rating and review count each platform showed in public search results on the day we looked, with the link. We do not read or reproduce the reviews, and a rating is the platform's, not ours.

  • G2 · 4.7 out of 5 · 76 reviews[9]seen November 3, 2026

Recent news

Dated company events from the last twelve months, each in one sentence of ours with its source. Newest first.

  • November 3, 2026

    Chainguard introduced Chainguard Harness, an offering for hunting exploitable vulnerabilities in a running application, and opened its beta waitlist. Chainguard[21]

  • August 17, 2026

    Chainguard announced that its Chainguard Containers reached SLSA Build Level 3. Chainguard[7]

  • July 21, 2026

    Booz Allen Hamilton signed an enterprise license agreement with Chainguard. Chainguard[8]

  • June 15, 2026

    Chainguard and partner organizations announced Athena, an industry coalition for the orchestrated defense of open source software. PR Newswire[22]

References

Every fact above cites one of these by number. Tier A is the company itself, a regulator or a filing; tier B is trade or business press.

  1. [1]chainguard.devChainguard · chainguard.dev · undated page, accessed September 27, 2026 · Tier A: the company, a regulator or a filing
  2. [2]Chainguard announces 280 million growth financing from general catalyst to usher in next era of trusted open source software 302592279Chainguard via PR Newswire · prnewswire.com · published October 23, 2025 · Tier A: the company, a regulator or a filing
  3. [3]Chainguard for the Public Sector | Secure OSSChainguard · undated page, accessed October 23, 2026 · Tier A: the company, a regulator or a filing
  4. [4]Chainguard for Financial Services | Prevent cyber attacksChainguard · undated page, accessed October 23, 2026 · Tier A: the company, a regulator or a filing
  5. [5]The trusted source for open source | ChainguardChainguard · undated page, accessed October 23, 2026 · Tier A: the company, a regulator or a filing
  6. [6]Chainguard for Startups | Scale fast and securelyChainguard · undated page, accessed October 23, 2026 · Tier A: the company, a regulator or a filing
  7. [7]Proven, not promised: Chainguard Containers achieves SLSA Build Level 3Chainguard · published August 17, 2026 · Tier A: the company, a regulator or a filing
  8. [8]Booz Allen Hamilton signs enterprise license agreement with ChainguardChainguard · published July 21, 2026 · Tier A: the company, a regulator or a filing
  9. [9]Chainguard Reviews 2026: Details, Pricing, & Features - G2G2 · undated page, accessed October 23, 2026 · Tier C
  10. [10]Chainguard Containers | 3,000+ hardened container imagesChainguard · undated page, accessed November 3, 2026 · Tier A: the company, a regulator or a filing
  11. [11]Simplify PCI-DSS Requirements with ChainguardChainguard · undated page, accessed November 3, 2026 · Tier A: the company, a regulator or a filing
  12. [12]Chainguard Libraries | Secure Open Source DependenciesChainguard · undated page, accessed November 3, 2026 · Tier A: the company, a regulator or a filing
  13. [13]Chainguard VMs | Secure your virtual machine imagesChainguard · undated page, accessed November 3, 2026 · Tier A: the company, a regulator or a filing
  14. [14]Chainguard OS Packages | 30,000+ secure packagesChainguard · undated page, accessed November 3, 2026 · Tier A: the company, a regulator or a filing
  15. [15]Chainguard Actions | Secure-by-default CI/CD workflowsChainguard · undated page, accessed November 3, 2026 · Tier A: the company, a regulator or a filing
  16. [16]Chainguard Guardener | Easy, AI-assisted migrationChainguard · undated page, accessed November 3, 2026 · Tier A: the company, a regulator or a filing
  17. [17]Chainguard Factory | ChainguardChainguard · undated page, accessed November 3, 2026 · Tier A: the company, a regulator or a filing
  18. [18]Chainguard Checks | Ship through trusted CIChainguard · undated page, accessed November 3, 2026 · Tier A: the company, a regulator or a filing
  19. [19]Chainguard Workspaces | Code safely with agentsChainguard · undated page, accessed November 3, 2026 · Tier A: the company, a regulator or a filing
  20. [20]Chainguard Harness | Eliminate CVE and malware exposureChainguard · undated page, accessed November 3, 2026 · Tier A: the company, a regulator or a filing
  21. [21]Everything we announced at Chainguard Assemble London 2026Chainguard · published November 3, 2026 · Tier A: the company, a regulator or a filing
  22. [22]Chainguard Launches Athena, the Industry Coalition to Fix Open Source Vulnerabilities Before Attackers Can Find ThemPR Newswire · published June 15, 2026 · Tier A: the company, a regulator or a filing

Last verified September 27, 2026. Our code found the quoted passage behind each fact on its source page when the fact was recorded, and re-checks every record against its sources each month.

Recorded September 27, 2026, expanded November 3, 2026 from the references above.

Work for Chainguard? Suggest a correction to a fact on this page (with a source on your own domain), or claim this entry by publishing a small file on your domain.

Questions CISOs ask about Chainguard

Who is the CISO of Chainguard?
Quincy Castro is the current Chief Information Security Officer (CISO) of Chainguard on CISO Tribune's record, appointed in the week of July 28, 2025.
How many security-leadership moves has CISO Tribune tracked at Chainguard?
CISO Tribune has tracked 1 move at Chainguard since July 28, 2025.
When was Quincy Castro appointed at Chainguard?
Quincy Castro's appointment as Chief Information Security Officer (CISO) of Chainguard was announced in the week of July 28, 2025, per SecurityWeek Industry Moves (week of 2025-07-28).
Where did Quincy Castro work before becoming Chief Information Security Officer (CISO) of Chainguard?
The record of the appointment gives Quincy Castro's previous role as CISO at Redis.
Who are the security chiefs at other Cybersecurity Vendors organizations?
On CISO Tribune's record they include Kobi Sivilya at Checkmarx, Alex Stamos at Cognition, Lane Sullivan at Concentric AI and Aman Sirohi at Cyberhaven.
Has Quincy Castro spoken or written publicly?
CISO Tribune's Voices section carries 2 public posts and talks by Quincy Castro, the most recent dated October 21, 2026.
What does Chainguard sell?
Chainguard sells Chainguard Containers, Chainguard Libraries, Chainguard VMs, Chainguard OS Packages, Chainguard Actions, Chainguard Guardener and Chainguard Workspaces. Chainguard Containers: Container images for over 3,000 projects, rebuilt continuously. Chainguard Libraries: A malware-free catalog of open source dependencies. Chainguard VMs: Minimal Linux virtual machine images based on Chainguard OS. Chainguard OS Packages: 30,000+ zero-CVE packages for building custom images.
Who does Chainguard fit?
From its own pages, Chainguard sells mainly to engineering and security teams whose developers and AI agents pull open source software. Chainguard says its FIPS-validated container variants and OS-level STIG hardening are available for regulated environments. Chainguard addresses vendors handling cardholder data that face PCI DSS vulnerability management requirements. Chainguard says its VMs run across cloud and on-premise environments. Chainguard names compliance frameworks such as FedRAMP and CMMC among those its zero-CVE images help with.
How does CISO Tribune file Chainguard?
CISO Tribune files Chainguard under Software supply chain security.
Who owns Chainguard?
Chainguard is privately held.

Related guides