Erica specializes in defending people who have been harmed online. She represents plaintiffs seeking to take down or block the publication or republication of unlawful content about themselves or their business. She litigates online issues regarding harassment, the right to privacy, identity theft and impersonation, and defamation. She also advises clients proactively on steps that may be taken to reclaim their reputations in the Age of search. Erica educates the public and lawmakers on these issues, and is on the cutting edge in using the legal system to identify and confront this new class of harms.

Erica is licensed to practice law in states of New York and California. Before founding Ridder, Costa & Johnstone LLP, Erica was a litigation associate at a large national law firm, and has also worked for an independent film producer in Los Angeles, California, and covered local music for MTV.  Erica graduated with honors from the University of North Carolina School of Law and also attended Duke University, where she received an undergraduate degree in Public Policy Studies.

Erica writes as a social media columnist for California Lawyer magazine.