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CSA STAR

CSA STAR (Security, Trust, Assurance and Risk) is the Cloud Security Alliance's public registry and assurance program for cloud providers. It is built on the Cloud Controls Matrix (CCM v4, 197 control objectives in 17 domains) and its companion questionnaire, the CAIQ. Level 1 is a self-assessment: the provider completes the CAIQ and publishes it in the STAR Registry.

Level 2 is third-party assurance: STAR Certification (an ISO/IEC 27001 certification extended with a CCM maturity assessment) or STAR Attestation (a SOC 2 examination extended with the CCM), plus C-STAR for the Greater China market.

In writing, a provider needs the same documented ISMS or SOC 2 control set as the underlying scheme, plus a CCM mapping and a completed CAIQ that states how each control is implemented. Level 1 entries must be kept current, and Level 2 listings expire with the underlying certificate or attestation.

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Who has to comply

Voluntary. Cloud service providers use it to publish their security posture; some enterprise and public sector buyers ask for a STAR Registry entry in procurement. No statutory trigger.

What the assessor asks to see

Completed CAIQ v4 with implementation statements; CCM control mapping to the ISMS or SOC 2 control set; ISO 27001 certificate or SOC 2 report from an approved auditor; policies and procedures per CCM domain; evidence of control operation for the maturity scoring (STAR Certification) or the SOC 2 period (STAR Attestation).

Levels

Level 1 is a published self-assessment (CAIQ) with no auditor. Level 2 is third-party assurance in one of three forms: STAR Certification (ISO/IEC 27001 plus CCM maturity, three-year certificate), STAR Attestation (SOC 2 plus CCM, renewed every twelve months) and C-STAR (GB/T 22080 plus CCM for Greater China, three years).

CSA's earlier Level 3 continuous concept is not an active listing tier; check the STAR page for current options.

Who helps with CSA STAR

Yes. ISO 27001 and SOC 2 readiness consultants add the CCM mapping and CAIQ preparation to their standard engagements; GRC platforms ship CCM templates. Typical shape: complete the CAIQ for Level 1, then fold the CCM into the next ISO or SOC 2 cycle for Level 2.

Firms that name this framework in their own material. A listing is not a recommendation. Each firm can confirm its own.

Listed in random order, reshuffled each time the page loads. Firms that pay for a listing are shown at the top, labeled Sponsored.

Atlant SecurityUSA
What they do
Compliance consulting
Who they help
Its website offers consulting for CSA STAR, ISO 27001, SOC 2, HIPAA, PCI DSS and more.
Standards
CSA STARISO 27001SOC 2HIPAAPCI DSS
+20 moreShow fewerCMMCNIST 800-171ISO 42001NIST CSFGDPRHITRUSTISO 27701DORANIS2NIST 800-53TISAXEU AI ActGLBAITARDFARSNYDFS 23 NYCRR 500CIS ControlsISO 27005ISO 62443UK GDPR
Pricing
Not published
Website ↗Claim this listing →Website checked Sep 26, 2026
Romano Security ConsultingMacclesfield, Cheshire, UK
What they do
Compliance consulting
Who they help
Its website offers consulting for CSA STAR, ISO 27001, SOC 2, ISO 9001, ISO 42001 and more.
Standards
CSA STARISO 27001SOC 2ISO 9001ISO 42001
+6 moreShow fewerGDPRISO 14001ISO 13485ISO 22301DSPTISO 27035
Pricing
Not published
Website ↗Claim this listing →Website checked Sep 26, 2026
Cyberverse Pty LtdVictoria, Australia
What they do
Compliance consulting
Who they help
Its website offers consulting for CSA STAR, ISO 27001, ISO 9001, HIPAA, PCI DSS and more.
Standards
CSA STARISO 27001ISO 9001HIPAAPCI DSS
+18 moreShow fewerGDPRNIST CSFISO 42001ISO 22301APRA CPS 234CCPA/CPRACIS ControlsCOBITDISPEssential EightIRAPISMISO 20000-1ISO 31000ISO 42005NIST AI RMFPSPFRFFR
Pricing
Not published
Website ↗Claim this listing →Website checked Sep 30, 2026
QualitcertBengaluru, Karnataka, India
What they do
Compliance consulting
Who they help
Its website offers consulting for CSA STAR, ISO 27001, SOC 2, ISO 9001, PCI DSS and more.
Standards
CSA STARISO 27001SOC 2ISO 9001PCI DSS
+41 moreShow fewerGDPRISO 14001ISO 45001ISO 42001ISO 13485ISO 22301ISO 27701CMMICOBITDPDP ActFSSC 22000GMPHACCPHITRUSTISO 10001ISO 10002ISO 14046ISO 15189ISO 17020ISO 17021-1ISO 17021-2ISO 17021-3ISO 17025ISO 20000-1ISO 21001ISO 22000ISO 26000ISO 27002ISO 27006ISO 27017ISO 27018ISO 27071ISO 29001ISO 31000ISO 37001ISO 41001ISO 50001ISO 55001ISO 56001SA8000SOC 1
Pricing
Not published
Website ↗Claim this listing →Website checked Sep 28, 2026
BH ConsultingDublin 15, Ireland
What they do
Compliance consulting
Who they help
Its website offers consulting for CSA STAR, PCI DSS, GDPR, NIST CSF, ISO 42001 and more.
Standards
CSA STARPCI DSSGDPRNIST CSFISO 42001
+12 moreShow fewerISO 27701CCPA/CPRACIS ControlsCyber EssentialsDORAEU AI ActISO 27018ISO 62443LGPDNIS2PDPATISAX
Pricing
Not published
Website ↗Claim this listing →Website checked Sep 30, 2026
ForgePath SecurityNorfolk, Virginia, USA
What they do
Compliance consulting
Who they help
Its website offers consulting for CSA STAR, ISO 27001, SOC 2, HIPAA, CMMC and more.
Standards
CSA STARISO 27001SOC 2HIPAACMMC
+14 moreShow fewerNIST 800-171PCI DSSGDPRFedRAMPISO 42001ISO 27701CCPACSA CCMDORAFTC Safeguards RuleISO 27017NIS2NIST 800-53NIST AI RMF
Pricing
Not published
Website ↗Claim this listing →Website checked Oct 18, 2026

Who assesses CSA STAR

Level 1: none (self-assessment). Level 2 STAR Certification: an accredited ISO/IEC 27001 certification body that is also a CSA-approved STAR auditor. Level 2 STAR Attestation: a licensed CPA firm performing a SOC 2 examination that is a CSA-approved STAR auditor.

Accredited by CSA approves STAR auditors; the underlying ISO certification body is accredited by a national accreditation body (ANAB, UKAS and peers) and the CPA firm is licensed and peer reviewed under AICPA rules.

Public register of assessors: cloudsecurityalliance.org ↗

Listed in random order, reshuffled each time the page loads. Firms that pay for a listing are shown at the top, labeled Sponsored.

A-LIGNOn the public register
What they do
Assessor
Which standards
On the public register for CSA STAR, FedRAMP, StateRAMP, HITRUST.
Standards
CSA STARFedRAMPStateRAMPHITRUST
Pricing
Not published
BARR CertificationsOn the public register
What they do
Assessor
Which standards
On the public register for CSA STAR.
Standards
CSA STAR
Pricing
Not published
Schellman & CompanyOn the public register
What they do
Assessor
Which standards
On the public register for CSA STAR.
Standards
CSA STAR
Pricing
Not published
CoalfireOn the public register
What they do
Assessor
Which standards
On the public register for CSA STAR, FedRAMP, StateRAMP, HITRUST.
Standards
CSA STARFedRAMPStateRAMPHITRUST
Pricing
Not published
KirkpatrickPriceOn the public register
What they do
Assessor
Which standards
On the public register for CSA STAR.
Standards
CSA STAR
Pricing
Not published

Tools for CSA STAR

Tools that name this framework in their own material.

Grouped by type. Inside each group the order is random, reshuffled each time the page loads.

GRC and compliance automation1 tool

Controls, evidence and audit workflows, with a policy module inside.

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Related reading

  1. CSA STAR certification - Azure complianceExplains how STAR certification is built on an ISO 27001 audit plus the Cloud Controls Matrix maturity scoring.Microsoft
  2. CSA STAR attestation - Azure complianceShows the other Level 2 route, a SOC 2 engagement run against the Cloud Controls Matrix, and how the two differ.Microsoft

Independent third-party explainers, chosen by hand. Not affiliated with this site and not paid placements. All links are nofollow.

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