Nobody likes their anniversary to be forgotten, but Optus chief executive Kelly Bayer Rosmarin would very much like no fuss to be made on September 22, which marks one year since her company suffered a data breach that awoke Australia to the threat of cybercrime.

Optus and its leader suffered an undoubtedly torrid time after crooks made off with personal data, including identity documents of up to 9.8 million customers.