Carnival
MEDIUM RISKData breach — April 2026
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.
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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.
Quick answer — was Carnival hacked?
Yes. Carnival was breached in April 2026. The breach exposed 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.
Why was the Carnival breach so dangerous?
The Carnival breach exposed 7,531,359 records — that is 7.5M people whose personal data is now circulating on the dark web. The combination of dates of birth, email addresses, genders makes this a medium-risk breach that should be addressed promptly.
Don't wait to find out — check if your email was exposed in this breach now.
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. Research shows that over 65% of stolen credentials from older breaches have never been changed by the account holders. Attackers routinely compile data from multiple breaches to build complete profiles, and credentials from 2026 are still actively used in credential stuffing attacks today.
Personal information like email addresses, phone numbers, and dates of birth never expire. Even if you changed your Carnival password, the other exposed data can be combined with information from other breaches to target you. Learn more about how long stolen data stays dangerous.
Frequently asked about the Carnival breach
Approximately 7,531,359 user records were exposed in the Carnival breach in April 2026.
Yes. Leaked credentials are actively used in credential stuffing attacks years after a breach. If you reused your Carnival password elsewhere and haven't changed it, those accounts remain at risk today.
Enter your email in the free checker on EmailLeaked. We scan 12 billion+ breach records including the full Carnival dataset and tell you instantly whether your email was exposed and what data was taken.
Change your Carnival password immediately, change any other account where you used the same password, enable two-factor authentication on all important accounts, and monitor for phishing emails over the next 90 days.
How this breach page is reviewed
Breach pages are generated from structured breach records and reviewed for practical risk guidance. Risk labels are based on exposed data types and are meant to help readers prioritize action.
Who was affected by the Carnival breach?
The Carnival data breach affected approximately 7,531,359 users who had accounts with the service. While not the largest breach on record, it still represents a significant number of compromised accounts in our database of 979+ known breaches.
If you ever created an account with Carnival or used their services, your data may have been included in this breach. Check your email now to find out. You can also read our guide on what to do immediately after a data breach.
If your email was in the Carnival breach
Change your Carnival password immediately
Go to Carnival and change your password right now. Use a strong, unique password that you have never used anywhere else.
Change any account sharing that password
If you used the same password on other sites, change it on every one of them. Attackers test stolen credentials on hundreds of popular sites within hours.
Enable two-factor authentication
Turn on 2FA on Carnival and every important account. Even if your password is known, attackers cannot get in without the second factor.
Check your other accounts for this breach
Run a full email check to see every breach your email appears in — not just this one.
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