President Barack Obama's budget proposal for the 2016 fiscal year seeks US$14 billion (A$17.9 billion) to pay for cyber security efforts across the US government.
Federal cyber security funding has steadily increased in recent years, reflecting the intensity of threats US companies and government agencies are facing from cyber intruders, both domestic and foreign.
The budget, released on Monday, calls for deployment of more intrusion detection and prevention capabilities, greater sharing of data with the private sector and other countries and more funding to beef up the government's ability to respond to attacks.
The funding would support several specific programs, such as monitoring and diagnostics of federal computer networks, the EINSTEIN intrusion detection and prevention system and government-wide testing and incident-response training.
"Cyber threats targeting the private sector, critical infrastructure and the federal government demonstrate that no sector, network or system is immune to infiltration by those seeking to steal commercial or government secrets and property or perpetrate malicious and disruptive activity," the White House summary said.
However it is still unclear how much funding the Republican-controlled Congress will allow to pass through to cyber security efforts during the next fiscal year.
Among various requests, the White House sought US$227 million for construction of a Civilian Cyber Campus, meant to spur public-private partnerships, and US$160 million for information technology and cyber security of the weapons program at the Energy Department's National Nuclear Security Administration.
The Pentagon's budget alone called for US$5.5 billion in infosec funding. The agency's chief weapons tester last month told Congress that nearly every US weapons program showed "significant vulnerabilities" to cyber attacks, including misconfigured, unpatched and outdated software.
Increased funding for protection of government networks would be good news for big weapons makers like Lockheed Martin, General Dynamics, Northrop Grumman and Raytheon, which already play a big role in cyber security, encryption and analysis for defence and intelligence agencies.
Obama also asked for at least US$28 million for the Agriculture Department's chief information officer to improve the agency's cyber security and US$15 million for the FBI's grants, training, and technical assistance program that helps local law enforcement fight economic, high-technology and internet crimes.