Here are the arme of the SIRP (Sistema de Informações da República Portuguesa - Information System of the Portuguese Republic) created in 2007 to coordinate the Intelligence Services SIS and SIED.

http://img191.imageshack.us/img191/5555/ng1015088.jpg

Pircture from http://aeiou.expresso.pt/os-lusiadas-inspiram-brasao-do-patrao-das-secretas-portuguesas=f110174