Gemini data breach

Breach date: 2022-12-13. Added to this index: 2022-12-16. Accounts affected: about 5.3M. Domain: gemini.com.

What happened

In late 2022, a hacker posted a data set to a public hacking forum which they alleged was sourced from the Gemini crypto exchange, a claim that was later proven to be false as the data was traced back to an incident at a third-party vendor. The source of the breach was later established as being Twilio, who processed the data of some Gemini customers using their Authy service for 2FA. Twilio described the incident as stemming from a sophisticated social engineering attack designed to steal employee credentials.

Breach data sourced from Have I Been Pwned, used under CC BY 4.0. Additional breach metadata provided by XposedOrNot. DataExposed is an independent service and is not affiliated with or endorsed by either.

What was exposed

  • Email addresses: The email address you used to register or log in. It is the most common field in breaches because it doubles as your username on most sites.
  • Partial phone numbers: Part of a phone number, often the last two to four digits shown in account recovery screens, or a number with some digits masked.

What to do now

  1. Check whether your own address is in this dataset with the free email breach check.
  2. Review the accounts connected to this service and turn on two-factor authentication.
  3. Turn on two-factor authentication on your email account first, because it is the reset path for everything else.
  4. Treat calls and messages that quote real details about you as hostile until you verify them another way.

Frequently asked questions

What data was leaked in the Gemini breach?

The Gemini breach exposed Email addresses, Partial phone numbers. About 5.3M accounts were affected.

Was I affected by the Gemini breach?

Run the free email breach check with the address you used on that service. It will tell you whether your address appears in this dataset.

What should I do about the Gemini breach?

Treat any message that quotes details from this breach as suspicious, turn on two-factor authentication, and consider removing your details from people-search sites if your address or phone was included.

Next steps