** Shares of Excite Technology Services EXT.AX fall as much as 4.2% to A$0.0115, their lowest levels since February 4

** The cyber security firm posts a quarterly revenue of A$3.98 million ($2.40 million), down from A$5.32 million in the prior quarter

** Stock sees busiest session since March 11

** Stock up 15% YTD, including moves in current session

($1 = 1.6614 Australian dollars)

(Reporting by Jasmeen Ara Shaikh in Bengaluru)

((JasmeenAraIslam.Shaikh@thomsonreuters.com;))