Cyber threats continue to grow and are considered to be a significant threat to the national security. Cyber threats have a close connection with political, economic, military, and social events, and the geopolitical situation in general. Cyber threats must be evaluated in the context with other threats caused by other countries, as well as threats that originate due to the involvement of the Republic of Latvia in various international organisations (EU and NATO) and missions. Cyber threats related to the national security risks are significantly increased because the state administration agencies, society, and economy are more and more dependant on information technology. During the last few years, the number of countries that have a capacity to carry out cyber intelligence operations, information operations, and destructive measures within the cyberspace (blocking of services, damaging of information technology, damaging of physical infrastructure) has grown. The readiness of several countries, for example, the Russian Federation, to use such methods also increases. A significant threat is caused by the capacity of the Russian Federation to control the data flow and capacity to use the Internet for identifying the public opinion and changing it. The use of cyber measures against another country is a comparatively cheep weapon and in most cases remains anonymous. These measures can be carried out within the own territory and without the risk of being caught, and it is difficult to combat these measures. Cyber threats can be caused by foreign special services, cyber units working under the armed forces, as well as hacker groups that act in line with directives of national agencies or on their own. Cyber threats can be directed against the governmental and non-governmental sectors, as well as separate persons and businesses. Cyber threats to security of the cyberspace of the Republic of Latvia are increased due to lack of knowledge in the private and state sectors in regard to necessity to strengthen security of information technology, lack of highly-qualified IT specialists and the fact they leave Latvia to work in other countries, as well as insufficient capacity of the law enforcement agencies to solve cyber crimes and incomplete regulatory framework for sentencing people committing these crimes. Priorities of the Republic of Latvia for Prevention of Cyber Threats: Effective Implementation of the Cyber Security Policy Control and reduction of cyber threats can be achieved only if there is an effective cyber security policy in place, that can in long-term and systematically ensure necessary measures in