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Sumon Dantiki is a partner in the Special Matters & Government Investigations practice who focuses on sensitive, multi-dimensional investigations, disputes, and counseling often with cyber or national security implications. A former federal prosecutor and senior cyber / national security counselor, Sumon helps clients prevent and address critical risks to their business interests, including internal investigations, data breaches, insider threats, acquisition and cross-border investment due diligence and compliance, ransomware attacks, whistleblower complaints, and fraud.

Prior to joining King & Spalding, Sumon served in several senior roles at the U.S. Department of Justice (DOJ), most recently as Senior Counselor to the Director of the Federal Bureau of Investigation (FBI).  In this role, Sumon regularly counseled FBI leadership on the most sophisticated nation-state, cyber, insider, and espionage threats facing the country.  This included assisting the Director of the FBI in his oversight of intelligence and criminal investigations and responses as well as working with the National Security Council, and other intelligence, law enforcement, and security agencies in responding to data breaches, insider threats, economic espionage, foreign investment risks, ransomware attacks, and other major security threats.  Sumon routinely helped oversee responses to and engagement with oversight bodies, such as congress committees, Inspectors-General, and others.  He also served as Special Counsel to the Assistant Attorney General for National Security at DOJ and as a federal prosecutor within the DOJ Criminal Division’s Computer Crime and Intellectual Property Section.

Full Bio

Credentials

J.D., Yale Law School

B.A., University of Michigan, Dean's Merit Scholar, high distinction, Phi Beta Kappa

District of Columbia

U.S. Court of Appeals for the Fourth Circuit

Judicial Clerk, José A. Cabranes, U.S. Court of Appeals for the Second Circuit

Judicial Clerk, Kenneth M. Karas, U.S. District Court for the Southern District of New York

Matters

Served as lead outside counsel for Google in its pathbreaking investigation into, and litigation against, Russian cybercriminal botnet activity. Matter profiled by numerous national media outlets, including the Financial Times who recognized King & Spalding as the 2023 most “Innovative Lawyers: Cyber Security & Data Protection”.

Advises multiple significant investors on cyber and national security risks arising from U.S.-China investments.

Advised private equity fund on data security matters in relation to the acquisition of a majority interest in solar energy company.

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Matters

Served as lead outside counsel for Google in its pathbreaking investigation into, and litigation against, Russian cybercriminal botnet activity. Matter profiled by numerous national media outlets, including the Financial Times who recognized King & Spalding as the 2023 most “Innovative Lawyers: Cyber Security & Data Protection”.

Advises multiple significant investors on cyber and national security risks arising from U.S.-China investments.

Advised private equity fund on data security matters in relation to the acquisition of a majority interest in solar energy company.

Counseled leading global company on response to cybersecurity incident arising from MOVEit security vulnerability.

Conducted investigation of cyber intrusion by advanced persistent threat actor (APT) onto the networks of company in multiple critical infrastructure sectors.

Counseled Fortune 100 energy company on investigation and remediation of cybersecurity incident relating to government contract.

Advised major technology company on responses to insider threats involving “crown jewel” data.

Advised major chemical manufacturer on data security matters in connection with the divestiture of business. ?

Co-led an independent investigation on behalf of Board of Directors of Fortune 300 company into allegations of social media misuse by a C-suite company executive.

Led due diligence risk assessment of potential acquisition company providing cybersecurity solutions to critical infrastructure entities.

Lead internal investigation on behalf of Fortune 300 global company regarding insider threat risks and alleged whistleblower claims centered around senior executive with sensitive responsibilities.

Represented innovative energy company in trade secret theft investigation by departing senior executive.

Led an internal investigation on behalf of hospitality company related to data theft by a terminated executive, as well as managing subsequent law enforcement engagement.

Matters

Served as lead outside counsel for Google in its pathbreaking investigation into, and litigation against, Russian cybercriminal botnet activity. Matter profiled by numerous national media outlets, including the Financial Times who recognized King & Spalding as the 2023 most “Innovative Lawyers: Cyber Security & Data Protection”.

Advises multiple significant investors on cyber and national security risks arising from U.S.-China investments.

Advised private equity fund on data security matters in relation to the acquisition of a majority interest in solar energy company.

See more

Close

Matters

Served as lead outside counsel for Google in its pathbreaking investigation into, and litigation against, Russian cybercriminal botnet activity. Matter profiled by numerous national media outlets, including the Financial Times who recognized King & Spalding as the 2023 most “Innovative Lawyers: Cyber Security & Data Protection”.

Advises multiple significant investors on cyber and national security risks arising from U.S.-China investments.

Advised private equity fund on data security matters in relation to the acquisition of a majority interest in solar energy company.

Counseled leading global company on response to cybersecurity incident arising from MOVEit security vulnerability.

Conducted investigation of cyber intrusion by advanced persistent threat actor (APT) onto the networks of company in multiple critical infrastructure sectors.

Counseled Fortune 100 energy company on investigation and remediation of cybersecurity incident relating to government contract.

Advised major technology company on responses to insider threats involving “crown jewel” data.

Advised major chemical manufacturer on data security matters in connection with the divestiture of business. ?

Co-led an independent investigation on behalf of Board of Directors of Fortune 300 company into allegations of social media misuse by a C-suite company executive.

Led due diligence risk assessment of potential acquisition company providing cybersecurity solutions to critical infrastructure entities.

Lead internal investigation on behalf of Fortune 300 global company regarding insider threat risks and alleged whistleblower claims centered around senior executive with sensitive responsibilities.

Represented innovative energy company in trade secret theft investigation by departing senior executive.

Led an internal investigation on behalf of hospitality company related to data theft by a terminated executive, as well as managing subsequent law enforcement engagement.

Credentials

J.D., Yale Law School

B.A., University of Michigan, Dean's Merit Scholar, high distinction, Phi Beta Kappa

District of Columbia

U.S. Court of Appeals for the Fourth Circuit

Judicial Clerk, José A. Cabranes, U.S. Court of Appeals for the Second Circuit

Judicial Clerk, Kenneth M. Karas, U.S. District Court for the Southern District of New York