List of data breaches and cyber attacks in December 2019 – 627 million records breached

The new year – and new decade – is underway, but before saying goodbye to 2019, we have one more monthly round-up to get to.

December saw 90 disclosed data breaches and cyber attacks, with 627,486,696 records being compromised. That’s about a third of the average monthly total, although the number of incidents has climbed steadily throughout the year.

We are currently working on an infographic summarising the data we’ve collected throughout the year – so look out for that in the coming weeks.

In the meantime, here’s the full list of December’s incidents (breaches involving UK organisations have been highlighted):

Cyber attacks


In 2019, businesses will fall victim to a ransomware attack every 14 seconds

Data breaches

Financial information

Human error is to blame for 88% of data breaches in the UK

Malicious insiders and miscellaneous incidents

In other news…

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