List of Data Breaches and Cyber Attacks in March 2023 – 41.9 Million Records Breached

Looking for the latest lists of security incidents? Take a look at our complete breakdown of data breaches and cyber attacks on our new page.

Welcome to our March 2023 list of data breaches and cyber attacks. Our research identified exactly 100 publicly disclosed incidents during the month, accounting for 41,970,182 breached records.

You can find the full list of data breaches and cyber attacks below, including our new feature in which we delve into the month’s biggest incidents in a little more detail.

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Cyber attacks


If you’re facing a cyber security disaster, IT Governance is here to help. Our Cyber Incident Response service provides the help you need to deal with the threat, as our experts guide you through the recovery process.

They’ll review the breach, mitigate the damage and ensure that you are up and running again as soon as possible.


Ransomware


Data breaches


Malicious insiders and miscellaneous incidents