Australia's ReadyTech falls on platform cyber breach

** Shares of ReadyTech Holdings RDY fall 1.8% to A$2.16, snapping three sessions of gains

** Education software provider flags cyber incident involving its hosted student management system, VETtrak

** Co says access to platform temporarily unavailable, investigation launched

** At this stage, we are not aware of any impact beyond the affected platform — co

** Stock fell as much as 2.3% earlier in the day

** Stock down 30.3% this year, including the day's move