AMN /

ObamaPresident Barack Obama has unveiled a cyber security national action plan as his intelligence chief warned of growing risks from new technologies that open more doors to hackers.

Obama asked for 19 billion US Dollar for cyber security efforts in his budget request, a 35 per cent increase from current levels, with 3 billion US Dollar earmarked to help modernise the patchwork of computer systems used in government agencies.

The Obama cyber initiative responds to an epidemic of data breaches and cyber attacks on both government and private networks in recent years.

The US intelligence chief James Clapper has named Russia, China, Iran and North Korea as leading threat actors which pose risks for US security.