The National Security Agency hacked the email account of Mexican President Felipe Calderon, according to a German news agency.
Der Spiegel reported Sunday that the spy agency has a division for "particularly difficult missions" called "Tailored Access Operations" that "devises special methods for special targets."
A May 2010 report classified as "top secret" reportedly said the division had been successful in breaching Calderon's email account.
"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," the memo said, according to Der Spiegel.
The email was also reportedly used by cabinet members and contained "diplomatic, economic and leadership communications which continue to provide insight into Mexico's political system and internal stability," according to Der Spiegel's report of what the NSA said.
The German news agency added that the email became a "lucrative source" to the spy agency.
Der Spiegel said the operation, dubbed "Flatliquid," was described in a document leaked by whistleblower Edward Snowden.
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