BAE Systems' STOP version 6.0.E received an EAL4+ in April 2004 and the 6.1.E version received an EAL5+ certification in March 2005.
BAE Systems' STOP verze 6.0.E dostala EAL4+ v dubnu 2004 a verze 6.1.E dostala EAL5+ certifikaci v březnu 2005.