7.5M records in April 2026. Check whether your email is in this file — then read what was taken and what to do.
7.5M
Records exposed
2026
Year
7
Data types
Free
To check
Quick answer — was Carnival breached?
Yes. Carnival was breached in April 2026, exposing 7,531,359 records including dates of birth, email addresses, genders. This breach has been independently verified. If your email was involved, your data may still be at risk today. Check if you were affected.
What happened in the Carnival data breach?
In April 2026, the notorious hacking collective ShinyHunters claimed they had obtained a substantial volume of data belonging to the Carnival cruise operator and attempted to extort the organisation to prevent the data from being leaked. The following week, the group published the data publicly, which contained 8.7M records with 7.5M unique email addresses. The data contained fields indicating it related to the Mariner Society loyalty program run by Holland America, a cruise line brand under Carnival, and included names, dates of birth, genders and data relating to status within the loyalty program. Carnival acknowledged a phishing incident involving a single user account and advised they were working to better understand the scope of the unauthorised activity.
The exposed data included 7 types of personal information. Learn more about what a data breach means for you.
Why was the Carnival breach so dangerous?
The Carnival breach exposed 7,531,359 records — 7.5M people whose personal data is now circulating in criminal markets.
If you used Carnival, check whether your email was exposed in this breach.
What data was stolen in the Carnival breach?
Dates of birth — used to verify identity for account takeover and fraud
Email addresses — used for phishing attacks and credential stuffing against your other accounts
Genders — may be combined with other breach data to build a profile for targeted attacks
Geographic locations — may be combined with other breach data to build a profile for targeted attacks
Loyalty program details — may be combined with other breach data to build a profile for targeted attacks
Names — used to build profiles and target you with personalised scams
Salutations — may be combined with other breach data to build a profile for targeted attacks
Is the Carnival breach still dangerous in 2026?
Yes. Stolen data from the Carnival breach remains dangerous years after the incident. Attackers routinely compile data from multiple breaches to build complete profiles, and credentials from 2026 are still actively used in automated attacks today.
Personal information like email addresses, phone numbers, and dates of birth does not expire. Even if you changed your Carnival password, the other exposed data can be combined with information from other breaches to target you. Learn how long stolen data stays dangerous.
What to do if your email was in the Carnival breach
1
Change your Carnival password immediately
Log into Carnival and change your password to something strong and unique — one you have never used anywhere else. A password manager after a breach can generate and store a unique password so you never reuse one.
2
Change any account sharing that password
If you reused this password elsewhere, walk the password-reuse change checklist. You can also check whether that password appears in known leaks without sending the password itself.
3
Enable two-factor authentication
Turn on 2FA or a passkey after a breach on Carnival and every important account. Even if your password is known, attackers cannot sign in without the second factor.
4
Check your other accounts for this breach
Run a full email scan to see every breach your address appears in — not just this one. Then follow the after-breach playbook. If a password from this incident is still in use, check it without sending the password itself.
Check all my breaches — free5
Shrink people-search listings if your name or address was exposed
A leaked email plus a public people-search page makes phishing more convincing. That is a separate job from changing passwords. See the data broker opt-out guide for official forms and, if you want help, removal services.
Frequently asked about the Carnival breach
How many people were affected by the Carnival data breach?
Approximately 7,531,359 user records were exposed in the Carnival breach in April 2026.
Is the Carnival breach still a risk in 2026?
Yes. Leaked credentials are actively used in credential-stuffing attacks years after a breach. If you reused your Carnival password elsewhere and have not changed it, those accounts remain at risk today.
How do I check if my email was in the Carnival breach?
Enter your email in the free checker on EmailLeaked. We scan millions of breach records including the Carnival dataset and tell you instantly whether your email was exposed and what data was taken.
What should I do if I was in the Carnival breach?
Change your Carnival password immediately, update any account where you used the same password, and enable two-factor authentication on all important accounts. Use a unique password for every account — a password manager makes this straightforward — and monitor for phishing emails over the next 90 days.
How this breach page is reviewed
Breach pages are built from structured breach records and reviewed for practical risk guidance by EmailLeaked. Risk labels reflect exposed data types and are intended to help readers prioritise action.
Other major breaches
Was your email in this breach?
Check if your email appeared in the Carnival breach and 1033+ other known breaches — free, instant, no signup.
Check my email — freeWas my email hacked?
Check if your email is compromised in seconds. Free, private, no signup. Scan millions of breach records across 1034+ known breaches.
Check my email now — it's freeNo signup required · Results in under 5 seconds · Your data is never stored