18 Verified firms with an office in Chicago, Illinois · Verified first · All auditors
These firms have a published office in Chicago, Illinois. A firm may also have offices elsewhere. Listings are checked facts, not endorsements or rankings.
HQ: United StatesVerified
US accounting and consulting firm (first-listed office San Ramon, CA); listed as a PCI Qualified Security Assessor company and HITRUST External Assessor, with an ANAB-accredited ISO certification body (Armanino Certified, LLC).
San Ramon, California · Chicago, Illinois · New York, New York · +2 more
HQ: United StatesVerified
US advisory and accounting firm; listed as a PCI Qualified Security Assessor company, HITRUST External Assessor and FedRAMP-recognized assessor, with an ANAB-accredited ISO certification body (Baker Tilly Certifications LLC).
HQ: United StatesVerified
US member of the BDO network with its national headquarters in Chicago; listed as a PCI Qualified Security Assessor company.
HQ: United StatesVerified
CPA and advisory firm with offices across the US; performs SOC 1 and SOC 2 examinations and is listed as a HITRUST External Assessor and CMMC C3PAO.
Raleigh, North Carolina · Carlsbad, California · Torrance, California · +51 more
HQ: United StatesVerified
Cybersecurity advisory and assessment firm listed as a FedRAMP 3PAO, PCI QSA, HITRUST assessor, ISO certification body and (via Coalfire Federal) CMMC C3PAO.
Chicago, Illinois · Alpharetta, Georgia · Bellevue, Washington · +2 more
HQ: United StatesVerified
US accounting and advisory firm whose Chicago office is its national headquarters; listed as a PCI Qualified Security Assessor company and HITRUST External Assessor.
HQ: United StatesVerified
US member firm of the Deloitte network. ANAB-accredited ISO/IEC 27001 certification body, FedRAMP-recognized third-party assessor and HITRUST External Assessor.
New York, New York · Chicago, Illinois · Arlington, Virginia · +15 more
HQ: United StatesVerified
US member firm of the EY global network; listed as a PCI DSS Qualified Security Assessor and a HITRUST External Assessor.
New York, New York · Chicago, Illinois · San Francisco, California · +11 more
HQ: United StatesVerified
US accounting and advisory firm with offices in many states; listed as a PCI QSA, HITRUST External Assessor and CMMC C3PAO.
Charlotte, North Carolina · Appleton, Wisconsin · Asheville, North Carolina · +72 more
HQ: United StatesVerified
Licensed CPA firm with a Nashville corporate office performing SOC, HITRUST and PCI DSS assessments, with locations listed in ten US cities.
Nashville, Tennessee · Atlanta, Georgia · Bethesda, Maryland · +7 more
HQ: United StatesVerified
US member firm of the KPMG network. FedRAMP-recognized third-party assessor and PCI Qualified Security Assessor company.
New York, New York · Chicago, Illinois · McLean, Virginia · +9 more
HQ: United StatesVerified
Accounting and advisory firm with offices in Michigan, Illinois, Colorado, Ohio and other states; its cybersecurity practice covers SOC 1 and SOC 2 reporting, PCI DSS and HITRUST.
Southfield, Michigan · Broomfield, Colorado · Denver, Colorado · +17 more
HQ: CanadaVerified
Montreal-based accounting and advisory firm listed as a PCI Qualified Security Assessor (QSA) company, with offices in Toronto, Calgary and Chicago.
Montreal, Quebec · Toronto, Ontario · Calgary, Alberta · +1 more
HQ: United StatesVerified
Chicago-headquartered US member of the RSM network; listed as a PCI Qualified Security Assessor company, HITRUST External Assessor and FedRAMP-recognized third-party assessor.
HQ: United StatesVerified
US accounting and consulting firm with offices including St. Louis, Denver and Chicago; listed as a PCI Qualified Security Assessor company.
HQ: United StatesVerified
Accounting, technology and advisory firm with US offices in the Midwest, Mid-Atlantic and New England and offices in India; its services include SOC reporting and PCI DSS assessments.
Chicago, Illinois · Alexandria, Virginia · Marlborough, Massachusetts · +13 more
HQ: United StatesVerified
Chicago-headquartered security firm listed as a HITRUST External Assessor and PCI QSA.
HQ: United StatesVerified
Cybersecurity and compliance company with headquarters in Chicago and Dublin, offering PCI DSS assessments as a QSA company alongside penetration testing and vulnerability scanning.
Related locations: United States · Illinois · Schaumburg, Illinois
18 Verified firms have a published office in Chicago, Illinois. Pages exist only where at least 3 Verified firms match. This is not a ranking.
Firms on this page appear because an official registry listed them for at least one published framework (SOC 1, SOC 2, ISO 27001, ISO 27701, ISO 42001, HITRUST, PCI DSS, FedRAMP, CMMC, GovRAMP). Each firm page names the registry row and the date checked.
Chicago (18), Dallas (7), Denver (7), New York (7), Atlanta (6), Houston (5).
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