4.3M records in June 2026. Check whether your email is in this file — then read what was taken and what to do.
4.3M
Records exposed
2026
Year
2
Data types
Free
To check
Quick answer — was Operation Endgame 4.0 breached?
Yes. Operation Endgame 4.0 was breached in June 2026, exposing 4,348,526 records including email addresses, passwords. 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 Operation Endgame 4.0 data breach?
On 18 June 2026, the latest phase of Operation Endgame targeted the SocGholish malware operation, a prolific malware distribution network used to compromise systems and facilitate further cybercrime. Coordinated by international law enforcement agencies with support from Europol and Eurojust, the operation remediated almost 15,000 compromised websites and disrupted more than 100 servers and domains used to distribute malware. Authorities initially provided industry-standard breach data sources with 154k impacted email addresses and more than half a million previously unseen passwords. The following week, a further 4M email addresses and 9M passwords relating to the StealC malware operation also targeted by Operation Endgame were provided, followed by another 131k email addresses the following month, bringing the total to more than 4.3M unique email addresses.
The exposed data included 2 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.
Why was the Operation Endgame 4.0 breach so dangerous?
The Operation Endgame 4.0 breach exposed 4,348,526 records — 4.3M people whose personal data is now circulating in criminal markets.
Because passwords were exposed, attackers can use credential stuffing to automatically test your Operation Endgame 4.0 credentials against hundreds of other websites. Read more about what happens to your data after a breach.
If you used Operation Endgame 4.0, check whether your email was exposed in this breach.
What data was stolen in the Operation Endgame 4.0 breach?
Email addresses — used for phishing attacks and credential stuffing against your other accounts
Passwords — can be used to access your accounts directly or cracked to reveal your actual password
Is the Operation Endgame 4.0 breach still dangerous in 2026?
Yes. Stolen data from the Operation Endgame 4.0 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 Operation Endgame 4.0 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 Operation Endgame 4.0 breach
1
Change your Operation Endgame 4.0 password immediately
Log into Operation Endgame 4.0 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 Operation Endgame 4.0 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.
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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 Operation Endgame 4.0 breach
How many people were affected by the Operation Endgame 4.0 data breach?
Approximately 4,348,526 user records were exposed in the Operation Endgame 4.0 breach in June 2026.
Is the Operation Endgame 4.0 breach still a risk in 2026?
Yes. Leaked credentials are actively used in credential-stuffing attacks years after a breach. If you reused your Operation Endgame 4.0 password elsewhere and have not changed it, those accounts remain at risk today.
How do I check if my email was in the Operation Endgame 4.0 breach?
Enter your email in the free checker on EmailLeaked. We scan millions of breach records including the Operation Endgame 4.0 dataset and tell you instantly whether your email was exposed and what data was taken.
What should I do if I was in the Operation Endgame 4.0 breach?
Change your Operation Endgame 4.0 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.
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