LAWYER PROFILE
David Lashway

David Lashway

Global 2026

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Chambers ranking badge

Ranked in 1 practice area

Privacy & Data Security: Cybersecurity

USA

2 years ranked

About

Provided by Sidley Austin LLP

Global

Practice Areas

DAVID LASHWAY is widely recognized as a leading adviser for national security, crisis management, cybersecurity, data security incidents, misinformation, trade secret theft, and related investigation and litigation matters. Advocacy on behalf of his clients has earned him numerous acknowledgements, including a Band 1 ranking in Chambers USA (2021-2023) and Chambers Global (2022-2024) for Privacy & Data Security: Incident Response. David co-chairs the firm’s esteemed Privacy and Cybersecurity practice, and is a member of the firm’s Executive Committee. David also serves as a member of the firm’s top-ranked Crisis Management and Strategic Response group.

With more than 25 years of experience, David has advised a diverse range of private and public organizations on significant and material cybersecurity incidents across almost every critical infrastructure sector, including financial services, energy, manufacturing, technology, water, defense, municipal government, retail, transportation, and hospitality industries. He has significant experience in addressing election security and misinformation-related issues. He has served as the lead lawyer advising on the legal response to operationally impactful malware for a number of Fortune 500 entities, and led the incident response, associated investigations and litigations for several companies impacted by the NotPetya malware incident. He routinely leads responses to ransomware-related matters and is at the forefront of emerging issues posed by AI and generative AI-related technologies.

Chambers Review

Provided by Chambers

Chambers Global Guide

Privacy & Data Security: Cybersecurity - USA

Band 2
Band 2

Individual Editorial

David Lashway is a highly regarded representative for clients in cybersecurity regulatory investigations and frequently advises on data breach response. He also has cross-border capabilities.

Strengths

Provided by Chambers

  • David is excellent. He is great at dealing with a very complicated investigation and he just knows how to run the matter.

    Privacy & Data Security: CybersecurityChambers Global Guide
  • David is an exceptional talent.

    Privacy & Data Security: CybersecurityChambers Global Guide
  • David is a superb attorney.

    Privacy & Data Security: CybersecurityChambers Global Guide
  • David is an outstanding lawyer, counselor, advocate, and diplomat. His technical legal expertise is unmatched. His understanding of the legal, commercial, and geopolitical sets him apart.

    Privacy & Data Security: CybersecurityChambers Global Guide

Ranked Individuals at Sidley Austin LLP (161)

Asia-Pacific Region

Australia

Belgium

China

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