Todor Kassabov was born in the town of Aitos. He graduated from the Higher Institute of the Ministry of Interior (Simeonovo). From 1994 to 1998 he worked as an investigator in Varna, and since then he has been a managing partner at the Law Firm "Varna, Kasabov and Partners" in Varna. He has convictions against Bulgaria at the European Court of Human Rights in Strasbourg. His first book, "The Circle of Anarhazis", published in 2006, relates to the problems of the Bulgarian justice system.