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Phyllis B. Sumner is a Partner in King & Spalding's Atlanta office and the firm's Chief Privacy Officer. She leads the firm's Data, Privacy and Security Practice and regularly counsels corporate boards, senior executives and other clients on cybersecurity preparedness, emergency response, remediation, compliance, internal and regulatory enforcement investigations and data breach and privacy litigation.

She is a crisis manager and trial lawyer, who works with her clients' legal, compliance and business teams to strategize, manage and defend when significant privacy and security issues arise. She has assisted clients with responding to and managing hundreds of data security incidents including representing clients defending against class actions and regulator investigations in some of the largest and most high-profile data security incidents.

Phyllis is ranked as a leading lawyer by Chambers USA 2022 where her clients note “Her knowledge and expertise when it comes to ransomware incident response is second to none.” In 2022, 2021, 2020, 2019, 2018 and 2016 Cybersecurity Docket named her to its list of the “best and brightest Incident Response attorneys." In 2019, Global Data Review named her to its Women in Data list. She is a 2017 and 2016 Law360 MVP in Privacy and Cybersecurity. The Daily Report named her a “Distinguished Leader” in 2017 and in 2016 Atlanta Magazine recognized her as a "Woman Making a Mark."

She served as an Assistant U.S. Attorney for eight years, first for the Northern District of Illinois and then for the Northern District of Georgia, prosecuting high-profile cases such as Eric Rudolph, the Centennial Olympic Park bomber.

Full Bio

Credentials

J.D., Vanderbilt University

B.B.A., University of Georgia

Georgia

Illinois

Supreme Court of Georgia

U.S. Court of Appeals for the Eleventh Circuit

U.S. Court of Appeals for the Ninth Circuit

U.S. District Court for the Middle District of Georgia

U.S. District Court for the Northern District of Georgia

U.S. District Court for the Northern District of Illinois

Recommended in Legal 500 US 2020 for Cyber Law


Legal 500, 2020

Recommended in Legal 500 US 2020 for General Commercial Disputes


Legal 500, 2020

Women in Data


Global Data Review, 2019

Incident Response Top 30 Award


Cybersecurity Docket, 2019

Incident Response Top 30 Award


Cybersecurity Docket, 2018

Cybersecurity and Privacy MVP


Law360, 2017

Distinguished Leader Award


Daily Report 2017

Privacy MVP Award


Law360, 2016

Women Making a Mark Award


Atlanta Magazine, 2016

Incident Response Top 30 Award


Cybersecurity Docket, 2016

Healthcare MVP Award


Law360, 2014

Georgia Super Lawyer, 2013–2016

Director’s Award, for superior performance in the trial of former Atlanta Mayor Bill Campbell


Executive Office for the United States Attorneys, 2008

John Marshall Award, for the prosecution of Olympic Park bomber Eric Rudolph


Attorney General, 2006

Director’s Award, for the prosecution of Olympic Park bomber Eric Rudolph


Bureau of Alcohol, Tobacco, Firearms and Explosives, 2006

Award, for the prosecution of Olympic Park bomber Eric Rudolph


Federal Bureau of Investigation, 2006

Honorary Special Agent Award, for the trial and conviction of former Atlanta Mayor Bill Campbell


Internal Revenue Service, 2006

Director’s Award of Recognition, for the trial and conviction of a former Atlanta City Commissioner


Federal Bureau of Investigation, 2003

Honorary Special Agent Award, for the trial and convictions in a multimillion dollar timber fraud case


Internal Revenue Service, 2003

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Recognition

Recommended in Legal 500 US 2020 for Cyber Law


Legal 500, 2020

Recommended in Legal 500 US 2020 for General Commercial Disputes


Legal 500, 2020

Women in Data


Global Data Review, 2019

Incident Response Top 30 Award


Cybersecurity Docket, 2019

Incident Response Top 30 Award


Cybersecurity Docket, 2018

Cybersecurity and Privacy MVP


Law360, 2017

Distinguished Leader Award


Daily Report 2017

Privacy MVP Award


Law360, 2016

Women Making a Mark Award


Atlanta Magazine, 2016

Incident Response Top 30 Award


Cybersecurity Docket, 2016

Healthcare MVP Award


Law360, 2014

Georgia Super Lawyer, 2013–2016

Director’s Award, for superior performance in the trial of former Atlanta Mayor Bill Campbell


Executive Office for the United States Attorneys, 2008

John Marshall Award, for the prosecution of Olympic Park bomber Eric Rudolph


Attorney General, 2006

Director’s Award, for the prosecution of Olympic Park bomber Eric Rudolph


Bureau of Alcohol, Tobacco, Firearms and Explosives, 2006

Award, for the prosecution of Olympic Park bomber Eric Rudolph


Federal Bureau of Investigation, 2006

Honorary Special Agent Award, for the trial and conviction of former Atlanta Mayor Bill Campbell


Internal Revenue Service, 2006

Director’s Award of Recognition, for the trial and conviction of a former Atlanta City Commissioner


Federal Bureau of Investigation, 2003

Honorary Special Agent Award, for the trial and convictions in a multimillion dollar timber fraud case


Internal Revenue Service, 2003

Matters

Defending Capital One in 2019 data breach.

Led defense of Equifax Inc. in 2017 data breach.

Led defense of The Home Depot in 2014 data breach consumer class action MDL.

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Matters

Defending Capital One in 2019 data breach.

Led defense of Equifax Inc. in 2017 data breach.

Led defense of The Home Depot in 2014 data breach consumer class action MDL.

Led defense of Sears/Kmart in the 2014 data breach financial institution consolidated class actions.

Matters

Defending Capital One in 2019 data breach.

Led defense of Equifax Inc. in 2017 data breach.

Led defense of The Home Depot in 2014 data breach consumer class action MDL.

See more
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Close

Matters

Defending Capital One in 2019 data breach.

Led defense of Equifax Inc. in 2017 data breach.

Led defense of The Home Depot in 2014 data breach consumer class action MDL.

Led defense of Sears/Kmart in the 2014 data breach financial institution consolidated class actions.

Credentials

J.D., Vanderbilt University

B.B.A., University of Georgia

Georgia

Illinois

Supreme Court of Georgia

U.S. Court of Appeals for the Eleventh Circuit

U.S. Court of Appeals for the Ninth Circuit

U.S. District Court for the Middle District of Georgia

U.S. District Court for the Northern District of Georgia

U.S. District Court for the Northern District of Illinois

Recommended in Legal 500 US 2020 for Cyber Law


Legal 500, 2020

Recommended in Legal 500 US 2020 for General Commercial Disputes


Legal 500, 2020

Women in Data


Global Data Review, 2019

Incident Response Top 30 Award


Cybersecurity Docket, 2019

Incident Response Top 30 Award


Cybersecurity Docket, 2018

Cybersecurity and Privacy MVP


Law360, 2017

Distinguished Leader Award


Daily Report 2017

Privacy MVP Award


Law360, 2016

Women Making a Mark Award


Atlanta Magazine, 2016

Incident Response Top 30 Award


Cybersecurity Docket, 2016

Healthcare MVP Award


Law360, 2014

Georgia Super Lawyer, 2013–2016

Director’s Award, for superior performance in the trial of former Atlanta Mayor Bill Campbell


Executive Office for the United States Attorneys, 2008

John Marshall Award, for the prosecution of Olympic Park bomber Eric Rudolph


Attorney General, 2006

Director’s Award, for the prosecution of Olympic Park bomber Eric Rudolph


Bureau of Alcohol, Tobacco, Firearms and Explosives, 2006

Award, for the prosecution of Olympic Park bomber Eric Rudolph


Federal Bureau of Investigation, 2006

Honorary Special Agent Award, for the trial and conviction of former Atlanta Mayor Bill Campbell


Internal Revenue Service, 2006

Director’s Award of Recognition, for the trial and conviction of a former Atlanta City Commissioner


Federal Bureau of Investigation, 2003

Honorary Special Agent Award, for the trial and convictions in a multimillion dollar timber fraud case


Internal Revenue Service, 2003

Icon close

Close

Recognition

Recommended in Legal 500 US 2020 for Cyber Law


Legal 500, 2020

Recommended in Legal 500 US 2020 for General Commercial Disputes


Legal 500, 2020

Women in Data


Global Data Review, 2019

Incident Response Top 30 Award


Cybersecurity Docket, 2019

Incident Response Top 30 Award


Cybersecurity Docket, 2018

Cybersecurity and Privacy MVP


Law360, 2017

Distinguished Leader Award


Daily Report 2017

Privacy MVP Award


Law360, 2016

Women Making a Mark Award


Atlanta Magazine, 2016

Incident Response Top 30 Award


Cybersecurity Docket, 2016

Healthcare MVP Award


Law360, 2014

Georgia Super Lawyer, 2013–2016

Director’s Award, for superior performance in the trial of former Atlanta Mayor Bill Campbell


Executive Office for the United States Attorneys, 2008

John Marshall Award, for the prosecution of Olympic Park bomber Eric Rudolph


Attorney General, 2006

Director’s Award, for the prosecution of Olympic Park bomber Eric Rudolph


Bureau of Alcohol, Tobacco, Firearms and Explosives, 2006

Award, for the prosecution of Olympic Park bomber Eric Rudolph


Federal Bureau of Investigation, 2006

Honorary Special Agent Award, for the trial and conviction of former Atlanta Mayor Bill Campbell


Internal Revenue Service, 2006

Director’s Award of Recognition, for the trial and conviction of a former Atlanta City Commissioner


Federal Bureau of Investigation, 2003

Honorary Special Agent Award, for the trial and convictions in a multimillion dollar timber fraud case


Internal Revenue Service, 2003