From the article in Appendix $1-$Major Optus customer data breach blamed on $$human

error$$

The following was stated. $$Meanwhile$,$ it has been suggested human error may have been behind the

hack. Days after sensitive customer information was leaked, including passport and driver$$s licence

numbers, an anonymous source within the company has pointed the finger at IT programmers. The

$$senior insider$$ told the ABC an error made by a programmer may have opened the door for

hackers.$$

What strategies should have been in place and how do these strategies link, to the rest of the Optus?

$($Hint: McKinsey $7-$S Framework$)$