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Data breaches → Gemini

Was your data in the Gemini breach?

2022 · gemini.com · ~5,274,214 accounts exposedHigh severity · 6/10

Gemini (gemini.com) suffered a data breach in 2022 that exposed around 5,274,214 accounts. If you had an account, some of your personal data may be circulating in leaked databases. The fastest way to know is to check your own email — free, in about 30 seconds, no password required.

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 details sourced from Have I Been Pwned, the industry-standard breach database. Risk analysis by Nullivo.

What was exposed, and why it matters

Not all breaches carry the same risk — what matters is which fields leaked. Here is what the Gemini breach exposed and what each item actually enables:

Phone numbers

Enables SIM-swap attacks (hijacking your number to intercept SMS codes), smishing, and voice scams that appear to come from your bank.

Email addresses

Puts you on spam and phishing lists, and confirms to attackers that you hold an account with this service — which makes impersonation emails more believable.

What to do if you were affected

These steps are ordered for this specific breach — the most urgent action given what leaked comes first.

  1. Phone numbers: Move two-factor authentication off SMS to an authenticator app or passkey, and add a port-out PIN with your mobile provider.
  2. Email addresses: Treat any message referencing this service with suspicion, and never act on links in unexpected emails.
  3. Check whether your own email appears in this breach — run a free scan to confirm before you spend time on the steps above.

How urgent is this now?

This data has been circulating for around 4 years, which means it has been copied, combined with other leaks and indexed by search tools many times over.

Remember: a breach can't be "un-leaked" — once a database is out, it exists in countless copies. The goal is to make the leaked data useless: change what can be changed, lock down what can't, and remove what has been republished.

Check if your email was exposed.Nullivo's free scan checks your own verified email against known breaches — including Gemini — in 30 seconds. No password, no signup, and we only ever scan your own email. Run your free scan →

Frequently asked questions

What data was exposed in the Gemini breach?

The Gemini breach exposed phone numbers, email addresses. Enables SIM-swap attacks (hijacking your number to intercept SMS codes), smishing, and voice scams that appear to come from your bank.

How many people were affected by the Gemini breach?

Around 5,274,214 accounts were exposed, making it a large breach.

What should I do if I had a Gemini account?

Move two-factor authentication off SMS to an authenticator app or passkey, and add a port-out PIN with your mobile provider. You can check whether your own email appears in this breach with a free Nullivo scan — no password required.

Breaches that exposed similar data

If the Gemini breach affected you, these breaches exposed comparable information — worth checking too, since leaked datasets are routinely combined.

See all breaches we cover →