The Firm: Proskauer's deep-rooted privacy and data security focus is bolstered by the firm's corporate, litigation, employment and healthcare departments. This broad-based expertise offers clients a deeply specialized practice across a range of industry sectors. The team has expertise on the ground in a number of major US markets including Los Angeles, New York, Boston and Washington, DC as well as an international presence in the UK and France.

Key Individuals: Kristen Mathews heads the firm's worldwide privacy and data security group, and represents clients in a multitude of industries including healthcare, finance, telecoms and online businesses. Sources note her strength in compliance advice, breach response and policy formulation.