** WhiteHawk shares WHK.AX soar 112.5% to A$0.017, set for their best day ever
** Cybersecurity firm gets $920 mln U.S. federal government contract for cyber supply chain risk solutions
** Trading volume of nearly 66 mln shares is 39x the 30-day avg and stock's busiest session in a year
** The surge in the stock swings it to YTD gains of ~55%
(Reporting by Nikita Maria Jino in Bengaluru)
((Nikita.Jino@thomsonreuters.com;))