Paul Madden steps down.
To increase chance of merger.
But don't touch internal, onboard systems.
Wants to focus on small cell sites in the US instead.
Education and Police hardest hit by tech savings drive.
Vodafone turnaround pays off, Optus continues bad run.
Internet of Things version of WIn10 breaks cover.
Spy agencies could have powers reined in.
Virtual floppy disc drive code is exploitable.
Forecasts $1.8m capex spend over next year.