The US Department of Defense is preparing to finalise new rules for buying weapons, in order to make its weapons system immune from any cyber attack.

The defence department is also preparing a guidebook for programme managers to fortify its defence system against cyber attacks, Assistant Secretary of Defense Katrina McFarland told Reuters.

Both documents will be completed by 30 September McFarland told in an interview to the agency.

McFarland also added that the department has reviewed all its major weapon programme for to fix any cyber vulnerability.

He said that new weapon programmes, like the Air Force long-range bomber system, to be awarded this summer will come with improved security system from the very beginning.

Improved security measures have come following the announcement of new defence acquisition rules announced in November.

As per the new norm, the contractors supplying weapons system to Pentagon will have follow established security standards on the unclassified network through which the companies are communicating with the suppliers.

The new norms also say that the companies need to report any cyberattacks that result in the loss of technical data from those networks.

The guidebook will guide the programme managers and acquisition officials in terms of data sharing about the potential threat, which will help in preventing the vulnerabilities to malicious software in the weapon system.