Experienced Whistleblower and Qui Tam Attorneys

What Distinguishes Our National Whistleblower Attorneys

Over the last decade, the attorneys in our Whistleblower and Qui Tam Practice Group have represented whistleblowers in helping the federal and state governments recover over $4 billion resulting from fraudulent and deceptive practices by banks, corporations, and other entities. In the process, our clients have received large awards for their brave actions in coming forward to expose fraud, waste, and abuse.

The Washington, DC office serves as the central hub for Sanford Heisler Sharp McKnight’s Whistleblower and Qui Tam Practice, which is led by Partners and Co-Chairs Vince McKnight and John McKnight. As co-chairs of the whistleblower practice group, they have over 40 years of combined experience representing whistleblowers and helping federal authorities recoup billions of dollars.

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Client Testimonials

Customs Fraud and Tariffs

We have successfully brought numerous cases involving customs fraud—an illegal attempt to evade taxes and tariffs by fraudulently reducing customs duties on imported goods. Customs fraud occurs when an individual or an organization deliberately misrepresents information to lower the duties, tariffs, or taxes owed on goods entering the United States.

Artificial Intelligence

While generative artificial intelligence (GenAI) advances and streamlines certain administrative tasks, it also creates more sophisticated opportunities for fraud. A growing concern is regarding AI companies overstating their technology’s capabilities, using performance metrics that lack tangible meaning and function more as marketing tools than genuine benchmarks. Additionally, unauthorized web scraping could raise significant legal and ethical risks, potentially leading to copyright infringement, contract breaches, and/or privacy violations.

Digital Advertisement Fraud

Digital advertising is a $500 billion industry worldwide. The lack of transparency with Supply Side Platforms (SSPs), Demand Side Platforms (DSPs), Supply Path Optimization (SPO), and the exchanges make this industry ripe for abuse.

Ponzi Schemes

The SEC and CFTC are increasingly cracking down on Ponzi schemes, a form of fraud where returns to earlier investors are paid with funds from new investors. Fraudsters often lure victims with promises of high returns and little risk, but instead of investing the money, they use it to sustain the scheme. These schemes are also prevalent in digital currencies like cryptocurrencies.

Cybersecurity

Government agencies have made cybersecurity a top priority, and our team has been at the forefront of informing the government of undisclosed breaches and vulnerabilities in companies’ cyber networks.

Government Contractors

Schemes include false certification of compliance with regulatory specifications and cybersecurity requirements, bid rigging, and small or disadvantaged business set-asides.

Healthcare

Schemes include billing for medically unnecessary procedures, upcoding for services not rendered, paying kickbacks to physicians in exchange for patient referrals, and off-labeling.

Aerospace

Schemes include inflating charges on a DoD or NASA contract, selling defective equipment, and failing to meet the specifications of government contracts.

Transportation

Involves fraud schemes with a connection to the motor vehicle industry, in which whistleblowers can allege safety issues and deficiencies in a motor vehicle pursuant to the National Highway Transportation Safety Act Whistleblower Program.

Carbon Markets

A key area of interest for the Commodity Futures Trading Commission (CFTC), rampant fraud exists within the Voluntary Carbon Markets through schemes such as manipulative and wash trading, “ghost” credits, double counting, and more.

Our National Whistleblower and Qui Tam Practice Group

Photo of H. Vincent McKnight Jr.

H. Vincent McKnight Jr.

Co-Vice Chairman and Co-Chair

Photo of John McKnight

John McKnight

Co-Chair

Photo of David Sanford

David Sanford

Chairman

Photo of Jeremy Heisler

Jeremy Heisler

Co-Vice Chairman

Judge Kevin Sharp

Judge Kevin Sharp

Co-Vice Chairman

Russell Kornblith, Partner and General Counsel

Russell Kornblith

Partner and General Counsel

Photo of Andrew Macurdy

Andrew Macurdy

Partner

Qiaojing Ella Zheng, Managing Partner of the Palo Alto and San Francisco Offices

Qiaojing Ella Zheng

Palo Alto and San Francisco Managing Partner

Photo of Surabhi Dhar

Surabhi Dhar

Of Counsel

Shaun Rosenthal, Of Counsel

Shaun Rosenthal

Of Counsel

Sarah Chu, Associate

Sarah Chu

Senior Litigation Counsel

James Hannaway, Associate

James Hannaway

Senior Litigation Counsel

Frank Xu, Senior Litigation Counsel

Frank Xu

Senior Litigation Counsel

Ting Cheung, Litigation Fellow

Ting Cheung

Associate

Shannon Henris, Tom Henderson Civil Rights Fellow

Shannon Henris

Associate

Erica Roberts

Erica Roberts

Associate

Recognized as Law Firm of the Year