David Lashway is a member of the global Executive Committee and co-leader of the global Privacy and Cybersecurity practice at Sidley Austin LLP.
He has a Band 1 ranking in Chambers USA (2026) for Privacy & Data Security: Cybersecurity; a Band 1 ranking in Chambers USA (2026) for National Security; and, a Band 1 ranking in Chambers USA(2021-2023) and Chambers Global (2022-2024) for Privacy & Data Security: Incident Response.
He also received “Hall of Fame” recognition in Legal 500 United States for Cyber Law, the highest ranking issued. The firm’s Privacy and Cybersecurity practice which David leads was recently named a 2025 “Cybersecurity & Privacy Practice Group of the Year” by Law360, and is recognized by Chambers USA among “The Elite” for Nationwide Privacy & Data Security (2021–2026).
The practice is praised in Chambers as “an unrivaled firm for privacy work” (2022). David also serves as a member of the firm’s Chambers Band 1 (2021–2026) ranked Crisis Management and Strategic Response group, and the firm’s White Collar Defense and Investigations Group, which is ranked among the top three law firms globally by the Global Investigations Review (2023–2025).
David is widely recognized as a leading adviser for crisis management, national security and cybersecurity matters, misinformation, trade secret theft, and related investigation and litigation matters.