List of Data Breaches and Cyber Attacks in January 2023 – 277.6 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 January 2023 list of data breaches and cyber attacks. The new year comes with the promise of fresh beginnings and to revolve the bad habits of our past, but we’ve had no such luck in the cyber security sector.

Our research discovered 104 publicly disclosed security incidents, which accounted for 277,618,767 leaked records. That’s more breached records than we found in any calendar month last year, and it’s among the most incidents we’ve ever seen.

You can find the full list of data breaches and cyber attacks below. Meanwhile, be sure to subscribe to our Weekly Round-up to receive the latest cyber security news and advice delivered straight to your inbox.

Cyber attacks

Emergency Cyber Incident Response Service

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.


Data breaches

Malicious insiders and miscellaneous incidents

The Weekly Round-up


  1. Neil 3rd February 2023
  2. Simon Uglow 3rd February 2023
  3. S. 3rd February 2023
  4. Luke Irwin 7th February 2023