The AFP announce the first arrest linked to the Optus data breach. But it's not the original hacker — it's someone accused of exploiting leaked data

Operation Guardian  — the Australian Federal Police (AFP) investigation set up after 10,200 customer records were published online following the Optus cyber attack — has made its first arrest.

A 19-year-old Sydney man has been charged, with the AFP holding a press conference about the arrest this afternoon. 

Let's unpack what we learned.