The Pentagon released a long-promised cybersecurity plan Thursday that declares the Internet a domain of war but does not spell out how the U.S. military would use the Web for offensive strikes.

The Defense Department’s first-ever plan for cyberspace states that DOD will expand its ability to thwart attacks from other nations and groups, beef up its cybersecurity workforce and expand collaboration with the private sector.

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Like major corporations and the rest of the federal government, the military “depends on cyberspace to function,” the DOD strategy states. The U.S. military uses cyberspace for everything from carrying out military operations to sharing intelligence data internally to managing personnel assignments.

“The department and the nation have vulnerabilities in cyberspace,” the document states. “Our reliance on cyberspace stands in stark contrast to the inadequacy of our cybersecurity.”

Other nations “are working to exploit DOD unclassified and classified networks, and some foreign intelligence organizations have already acquired the capacity to disrupt elements of DOD’s information infrastructure,” the plan states. “Moreover, non-state actors increasingly threaten to penetrate and disrupt DOD networks and systems.”

Groups are capable of this largely because “small-scale technologies” that have “an impact disproportionate to their size” are relatively inexpensive and readily available.

The Pentagon plans to focus heavily on three areas under the new strategy: The theft or exploitation of data, attempts to deny or disrupt access to U.S. military networks, and any attempts to “destroy or degrade networks or connected systems.”

Another problem highlighted in the strategy is a baked-in threat: “The majority of information technology products used in the United States are manufactured and assembled overseas.”

To address those issues, DOD revealed a multi-pronged approach.

As expected and foreshadowed by Pentagon officials’ comments in recent years, the plan etches in stone that cyberspace is now an “operational domain” just as land, air, sea and space have been for decades for the military.

“This allows DOD to organize, train and equip for cyberspace” as in those other areas, the plan states. It also notes the 2010 establishment of U.S. Cyber Command to oversee all DOD work in the cyberspace.

By crafting a this strategy, “the Department of Defense is acknowledging what all observers of the IT revolution have known for years: cyberwar is already a reality,” Lexington Institute analyst Daniel Goure, a former Army official, wrote recently.

“The publication of the cyberwar strategy may also help jumpstart a long-postponed public debate over the nature of such a war and how it should be deterred, if possible, or fought if necessary,” Goure wrote. “The last technology to revolutionize warfare to the same extent as IT is doing was that which led to the creation of nuclear weapons.”

The second leg of the plan is to employ new defensive ways of operating in cyberspace, first by enhancing the DOD’s “cyber hygiene.” That term covers ensuring that data on military networks remains secure, using the Internet wisely and designing systems and networks to guard against cyberstrikes.

The military will continue its “active cyber defense” approach of “using sensors, software and intelligence to detect and stop malicious activity before it can affect DOD networks and systems.” It also will look for new “approaches and paradigms” that will include “development and integration … of mobile media and secure cloud computing.”

The plan devotes more than a page to mostly underscore efforts long under way to work with other government agencies and the private sector.

Notably, it calls the Department of Homeland Security the lead for “interagency efforts to identify and mitigate cyber vulnerabilities in the nation’s critical infrastructure.” Some experts have warned against DOD overstepping on domestic cybersecurity.

The Pentagon also announced a new pilot program with industry designed to encourage companies to “voluntarily [opt] into increased sharing of information about malicious or unauthorized cyber activity.”

The strategy calls for a larger DOD cybersecurity workforce.

One challenge, Pentagon experts say, will be attracting top IT talent because the private sector can pay much larger salaries — especially in times of shrinking defense budgets. To that end, “DOD will focus on the establishment of dynamic programs to attract talent early,” the plan states.

On IT acquisition, the plan lays out several changes, including: faster delivery of systems; moving to incremental development and upgrading instead of waiting to buy “large, complex systems”; and improved security measures.

Finally, the strategy states an intention to work more closely with “small- and medium-sized business” and “entrepreneurs in Silicon Valley and other U.S. technology innovation hubs.”

The reaction from Capitol Hill in the immediate wake of the plan’s unveiling was mostly muted. Cybersecurity is not a polarizing political issue in the way some defense issues are, like missile defense.

Claude Chafin, a spokesman for House Armed Services Committee Chairman Buck McKeon (R-Calif.), called the strategy “the next step in an important national conversation on securing critical systems and information, one that the Armed Services Committee has been having for some time.”

That panel already has set up its own cybersecurity task force, which Chafin said would “consider this [DOD] plan in its sweeping review of America’s ability to defend against cyber attacks.”

As the Pentagon tweaks its approaches to cybersecurity, Senate Armed Services Committee ranking member John McCain John Sidney McCainAmerica's presence in Cam Ranh Bay should be more than occasional Meghan McCain, husband welcome first baby girl, Liberty Sage McCain Domenech The Hill's Morning Report - Sponsored by JobsOhio - Showdown: Trump-Biden debate likely to be nasty MORE (R-Ariz.) on Wednesday wrote Senate leaders saying that chamber must as well. McCain asked Majority Leader Harry Reid Harry Mason ReidGOP senators confident Trump pick to be confirmed by November Durbin: Democrats can 'slow' Supreme Court confirmation 'perhaps a matter of hours, maybe days at most' Supreme Court fight pushes Senate toward brink MORE (D-Nev.) and Minority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellIn rare move, Schumer forces vote to consider health care bill amid Supreme Court tensions COVID-19 talks hit crucial stretch Supreme Court nominee gives no clues in GOP meeting MORE (R-Ky.) to establish a temporary Select Committee on Cyber Security and Electronic Intelligence Leaks.

“Cybersecurity proposals have been put forth by numerous Senate committees, the White House and various government agencies; however, the Senate has yet to coalesce around one comprehensive proposal that adequately addresses the government-wide threats we face,” McCain’s office said in a statement. “A select committee would be capable of drafting comprehensive cybersecurity legislation quickly without needing to work through numerous and in some cases competing committees of jurisdiction.”

This story was posted at 1:35 p.m. and updated at 7:58 p.m.