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Data breaches → MGM Resorts (2022 Update)

Was your data in the MGM Resorts (2022 Update) breach?

2019 · mgmresorts.com · ~24,842,001 accounts exposedCritical severity · 8/10

MGM Resorts (2022 Update) (mgmresorts.com) suffered a data breach in 2019 that exposed around 24,842,001 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 July 2019, MGM Resorts discovered a data breach of one of their cloud services. The breach included 10.6M guest records with 3.1M unique email addresses stemming back to 2017. In May 2022, a superset of the data totalling almost 25M unique email addresses across 142M rows was extensively shared on Telegram. On analysis, it's highly likely the data stems from the same incident with 142M records having been discovered for sale on a dark web marketplace in mid-2020. The exposed data included email and physical addresses, names, phone numbers and dates of birth.

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 MGM Resorts (2022 Update) breach exposed and what each item actually enables:

Home addresses

Home addresses feed people-search and data-broker sites, which republish them publicly. They also make phishing far more convincing and, in the worst cases, enable real-world harassment.

Dates of birth

Date of birth is a permanent identifier used to verify identity by phone. Combined with a name and address it is often enough to impersonate you.

Phone numbers

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

Names and usernames

Links this leak to your other accounts — a reused username lets anyone build a profile of you across platforms.

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. Home addresses: Get your address removed from data brokers — they re-list roughly every four months, so this needs repeating.
  2. Dates of birth: Never confirm your date of birth to an inbound caller — hang up and dial the organisation back on a published number.
  3. Phone numbers: Move two-factor authentication off SMS to an authenticator app or passkey, and add a port-out PIN with your mobile provider.
  4. Names and usernames: Search your usual username to see what else it exposes, and use distinct handles for sensitive accounts.
  5. Email addresses: Treat any message referencing this service with suspicion, and never act on links in unexpected emails.
  6. Check whether your own email appears in this breach — run a free scan to confirm before you spend time on the steps above.

This breach put your details on data-broker sites

Because MGM Resorts (2022 Update) exposed home addresses, this is one of the breaches that feeds people-search and data-broker sites. Those sites scrape leaked databases, combine them with public records, and republish the result as a searchable profile — which is how a single breach turns into a permanent public listing. Removal works, but brokers typically re-list within about four months, so it has to be repeated.

See our broker-by-broker removal guides →

How urgent is this now?

This breach is over 7 years old. Old credentials still cause harm — leaked passwords from a decade ago are still tried against new accounts every day.

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 MGM Resorts (2022 Update) — 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 MGM Resorts (2022 Update) breach?

The MGM Resorts (2022 Update) breach exposed home addresses, dates of birth, phone numbers, names and usernames, email addresses. Home addresses feed people-search and data-broker sites, which republish them publicly. They also make phishing far more convincing and, in the worst cases, enable real-world harassment.

How many people were affected by the MGM Resorts (2022 Update) breach?

Around 24,842,001 accounts were exposed, making it a very large breach by any measure.

What should I do if I had a MGM Resorts (2022 Update) account?

Get your address removed from data brokers — they re-list roughly every four months, so this needs repeating. 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 MGM Resorts (2022 Update) breach affected you, these breaches exposed comparable information — worth checking too, since leaked datasets are routinely combined.

See all breaches we cover →