A recent judgment by the European Union's General Court—affirming a decision to fine a leniency applicant that violated the duty of confidentiality owed to the European Commission (EC)—serves as a reminder of the strict duties of leniency applicants to comply with the EC's rules on cooperation and secrecy during the course of an investigation. The case involved Italian tobacco processor, Deltafina, which—after making its leniency application and before dawn raids had been carried out—revealed to its main competitors at a trade association meeting that it had sought leniency. Additional information is available in our October 2011 EU/UK Competition Law Newsletter.