FacultyFaculty/Author Profile
Mary Ellen  Callahan

Mary Ellen Callahan

Jenner & Block LLP

Washington, DC, USA


Mary Ellen Callahan, Chair of Jenner & Block’s Privacy and Information Governance Practice, has unique and broad experience with interfacing the protection of privacy with cybersecurity and national security issues. A nationally recognized privacy attorney with over a decade of outside counsel experience, she served as Chief Privacy Officer of the U.S. Department of Homeland Security from 2009 until August 2012. She is a prolific writer and speaker on cutting edge commercial privacy issues.
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