LAWYER PROFILE
Colleen Theresa Brown

Colleen Theresa Brown

USA 2026

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Ranked in 2 practice areas

Contributions and articles

5 Global Practice Guides

About

Provided by Sidley Austin LLP

Practice Areas

COLLEEN BROWN provides strategic advice on digital risk management for a diverse range of companies, including those in the financial, insurance, life sciences, tech, energy, telecommunications, media, retail, and manufacturing sectors. Her clients turn to her for compliance advising, digital governance, investigations, litigation and regulatory enforcement defense, and crisis management related to AI, privacy, cybersecurity, and incident response. Colleen is widely viewed as a thought leader and go-to counsel in AI, privacy, and cybersecurity law, having developed an exceptional track record for steering her clients through their most challenging matters and achieving excellent results. As one client noted in Chambers USA 2025, “Colleen bridges the gap between legal and IT.” Another described her as “superb counsel.”

Colleen serves on the Steering Committee of the firm’s AI Working Group and is on the Advisory Boards of the Electronic Privacy Information Center and the Future of Privacy Forum in her personal capacity. Colleen co-founded Women in Privacy® (WIP), a networking group for women working as in-house counsel, compliance officers, and other professionals in the field of privacy. WIP holds regular meetings in the U.S. and the EU and is dedicated to thought leadership for women privacy professionals.

Chambers Review

Provided by Chambers

Chambers Guide to the USA

Privacy & Data Security: Privacy - USA - Nationwide

Band 4
Band 4

Individual Editorial
Colleen Theresa Brown has a strong privacy practice managing data breach issues and litigation. She also has experience of working on privacy matters following acquisitions.

Privacy & Data Security: Cybersecurity - USA - Nationwide

Band 5
Band 5

Individual Editorial
Colleen Theresa Brown has a strong privacy practice managing data breach issues and litigation. She also has experience of working on privacy matters following acquisitions.

Strengths

Provided by Chambers

  • Colleen's enthusiasm and passion for her practice is readily apparent. She provides well-informed, practical and actionable guidance that is based in extensive experience and drives positive change within our environment.

    Privacy & Data Security: PrivacyChambers Guide to the USA
  • Colleen is a trusted business partner.

    Privacy & Data Security: PrivacyChambers Guide to the USA

Ranked Individuals at Sidley Austin LLP (377)

California

All Contributions (5)

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