Mary Ellen Callahan
Partner, Jenner & Block LLPMary Ellen Callahan is a privacy attorney, with an extensive background in consumer protection law. As the former Chief Privacy Officer of the United States Department of Homeland Security Callahan has a unique and broad knowledge of and experience with the interface of the protection of privacy, civil rights and civil liberties with cybersecurity and national security issues. During her tenure at the Department of Homeland Security, she also served as Chief Freedom of Information Act (FOIA) Officer, responsible for centralizing both FOIA and Privacy Act operations to provide policy and programmatic oversight and support implementation across the Department. She is the founder and Chair of Jenner & Block’s Privacy and Information Governance Practice.
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