LAWYER PROFILE
Colleen Theresa Brown

Colleen Theresa Brown

Global 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 is a nationally recognized partner in the Privacy and Cybersecurity practice of Sidley Austin with an increasing focus on AI. She 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 privacy and cybersecurity law, having developed an exceptional track record for steering her clients through their most challenging matters and achieving excellent results.

Colleen is a Certified Information Privacy Professional (CIPP)/United States and a certified Artificial Intelligence Governance Professional (AIGP) through the International Association of Privacy Professionals (IAPP). She is on the Advisory Boards of the Electronic Privacy Information Center and the Future of Privacy Forum in her personal capacity, and at Sidley she serves on the Steering Committee of the firm’s AI Working Group. Additionally, Colleen is editor-in-chief of Sidley’s blog, Data Matters, a trusted resource for the latest developments on tech law and regulation.

Chambers Review

Provided by Chambers

Chambers Global Guide

Privacy & Data Security: Privacy - USA

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

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 bridges the gap between legal and IT.

    Privacy & Data Security: PrivacyChambers Global Guide
  • Colleen is very knowledgeable about data privacy regulation and risk management.

    Privacy & Data Security: PrivacyChambers Global Guide
  • Colleen has a great breadth of knowledge in the US privacy space. She always provides an in-depth summary of the legal landscape.

    Privacy & Data Security: PrivacyChambers Global Guide
  • Colleen is very good and really great on the privacy side.

    Privacy & Data Security: PrivacyChambers Global Guide
  • Colleen is superb counsel.

    Privacy & Data Security: PrivacyChambers Global Guide

Ranked Individuals at Sidley Austin LLP (159)

Asia-Pacific Region

Australia

Belgium

China

  • Profile image of Olivia Ngan
    Olivia Ngan

    Banking & Finance: Hong Kong-based (International Firms)

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  • Profile image of Constance Choy
    Constance Choy

    Capital Markets: Equity (International Firms)

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  • Profile image of Meng Ding
    Meng Ding

    Capital Markets: Equity (International Firms)

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  • Profile image of Claudia Yu
    Claudia Yu

    Capital Markets: Equity (International Firms)

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  • Profile image of Carrie Li
    Carrie Li

    Capital Markets: High-Yield Products (International Firms)

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  • Profile image of Yuet Ming Tham
    Yuet Ming Tham

    Corporate Investigations/Anti-Corruption (International Firms)

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  • Profile image of Lei Li
    Lei Li

    Corporate Investigations/Anti-Corruption (International Firms)

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  • Profile image of Christopher Cheng
    Christopher Cheng

    Corporate/M&A: Hong Kong-based (International Firms)

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  • Profile image of Constance Choy
    Constance Choy

    Corporate/M&A: Hong Kong-based (International Firms)

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  • Profile image of Desmond Ang
    Desmond Ang

    Dispute Resolution: Arbitration (International Firms)

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  • Profile image of Yan Zhang
    Yan Zhang

    Dispute Resolution: Arbitration (International Firms)

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  • Profile image of James Comber
    James Comber

    Dispute Resolution: Litigation (International Firms)

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  • Profile image of Desmond Ang
    Desmond Ang

    Dispute Resolution: Litigation (International Firms)

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  • Profile image of Dominic James
    Dominic James

    Financial Services: Contentious Regulatory (International Firms)

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  • Profile image of David Kalani Lee
    David Kalani Lee

    Investment Funds (International Firms)

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All Contributions (5)

Provided by Sidley Austin LLP

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