The Security Information Service (BIS) (Czech: Bezpečnostní informační služba), is the primary domestic national intelligence agency of the Czech Republic.[3] It is responsible for collecting, analyzing, reporting and disseminating intelligence on threats to Czech Republic's national security, and conducting operations, covert and overt, both domestically and abroad. It also reports to and advises the Government of the Czech Republic on national security issues and situations that threaten the security of the nation.