Pena Nieto's predecessor as president, Felipe Calderon, was also targeted. This image shows an excerpt from an NSA document classified as "top secret," from November 2010. The National Security Agency (NSA) has a division for particularly difficult cases. Called "Tailored Access Operations," or TAO for short, this department devises special methods for special targets. In May 2010, the division reported mission accomplished. A report classified as "top secret" said: "TAO successfully exploited a key mail server in the Mexican Presidencia domain within the Mexican Presidential network to gain first-ever access to President Felipe Calderon's public email account." According to the NSA, this email domain was also used by cabinet members, and contained "diplomatic, economic and leadership communications which continue to provide insight into Mexico's political system and internal stability."