FlexBooker
HIGH RISKData breach — December 2021
In December 2021, the online booking service FlexBooker suffered a data breach that exposed 3.7 million accounts. The data included email addresses, names, phone numbers and for a small number of accounts, password hashes and partial credit card data. FlexBooker has identified the breach as originating from a compromised account within their AWS infrastructure. The data was found being actively traded on a popular hacking forum.
search Check if you were affected — freeData exposed in this breach
What happened in the FlexBooker data breach?
In December 2021, the online booking service FlexBooker suffered a data breach that exposed 3.7 million accounts. The data included email addresses, names, phone numbers and for a small number of accounts, password hashes and partial credit card data. FlexBooker has identified the breach as originating from a compromised account within their AWS infrastructure. The data was found being actively traded on a popular hacking forum.
The exposed data included 5 types of personal information. Because passwords were exposed, users who reused their password on other sites are at particular risk. Learn more about what a data breach means for you.
Quick answer — was FlexBooker hacked?
Yes. FlexBooker was breached in December 2021. The breach exposed 3,756,794 records including email addresses, names, partial credit card data. 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 FlexBooker breach so dangerous?
The FlexBooker breach exposed 3,756,794 records — that is 3.8M people whose personal data is now circulating on the dark web. The combination of email addresses, names, partial credit card data makes this a high-risk breach that requires immediate action.
Because passwords were exposed, attackers can use credential stuffing to automatically test your FlexBooker password against hundreds of other websites. If you reused your password anywhere, those accounts are now at risk. Read more about what happens to your data after a breach.
Don't wait to find out — check if your email was exposed in this breach now.
What data was stolen in the FlexBooker breach?
Email addresses — used for phishing attacks and credential stuffing against your other accounts
Names — used to build profiles and target you with personalised scams
Partial credit card data — can be used for direct financial fraud and unauthorised transactions
Passwords — can be used to access your accounts directly or cracked to reveal your actual password
Phone numbers — enables SIM swapping attacks and targeted SMS phishing scams
Is the FlexBooker breach still dangerous in 2026?
Yes. Stolen data from the FlexBooker 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 2021 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 FlexBooker 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 FlexBooker breach
Approximately 3,756,794 user records were exposed in the FlexBooker breach in December 2021.
Yes. Leaked credentials are actively used in credential stuffing attacks years after a breach. If you reused your FlexBooker 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 FlexBooker dataset and tell you instantly whether your email was exposed and what data was taken.
Change your FlexBooker 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.
Who was affected by the FlexBooker breach?
The FlexBooker data breach affected approximately 3,756,794 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 970+ known breaches.
If you ever created an account with FlexBooker 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 FlexBooker breach
Change your FlexBooker password immediately
Go to FlexBooker 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 FlexBooker 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.
searchCheck all my breaches — freeOther major breaches
Was my email hacked?
Check if your email is compromised in seconds. Free, private, no signup. Scan 12 billion+ records across 970+ known breaches.
search Check my email now — it's freeNo signup required · Results in under 5 seconds · Your data is never stored