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Among the many questions raised by the Optus data leak – cybersecurity experts are confident it wasn’t a hack, but that may have to be decided by a court – is why the company was storing so much personal information for so long.

Oh no! A trusted institution has suffered a data breach and you’ve been affected. Take our quiz to find out how bad things are going to get for you.

As the extent of the Optus data breach emerges, a past victim of identity fraud urges people to more tightly guard their online security, as a cyber security researcher says tougher laws on company data retention are needed.

With almost half the adult population of Australia affected by the Optus security breach, questions are swirling about how stolen identity data can be misused.

The Dow Jones jumped by more than 500 points on Wednesday. Investors, meanwhile, focused on some notable insider trades. When insiders purchase or sell shares, it indicates their confidence or concern around the company's prospects. Investors and traders interested in penny stocks can consider this a factor in their overall…

Privacy experts say that more robust privacy protections are required in light of the Optus data breach last week.

But positive clinical trial results also renew the hopes of millions of seniors.

Medicare card numbers are the latest personal details to be exposed as part of the Optus data breach.

Optus and other telecommunications giants face a massive crackdown as the federal government prepares to rush through new privacy laws.

Albanese government considering sweeping overhaul of data retention and privacy laws following massive Optus cyber hack

Forecasters warn that every town in Australia should prepare for one of the most severe weather seasons on record, and Treasurer Jim Chalmers wants an Australian to replace the queen on the $5 note.