Operation Endgame 2024 Data Breach
ObscureIQ Breach Intelligence
Low SeverityWebsite / service breach
Operation Endgame Law Enforcement Botnet Seizure (2024): 16.5 Million Malware Victim Email Addresses Notified
Malware disruption and victim notification.
Verified by ObscureIQ Intelligence
30/100Breach Risk Index
20Data Value
10Market Recency
769dSince Breach
Breach Intelligence Summary
Entity: Operation Endgame · Actor: Malware operators (IcedID, SmokeLoader, Trickbot, Pikabot, SystemBC, Bumblebee) - infrastructure seized by law enforcement · Sources: 2 references
Attack: Malware / Infostealer
Profile: Law Enforcement Cyber Operation · Malware disruption and victim notification · Seized malware-victim dataset from botnet takedown · Global
Timeline: Breach (2024-05-30) · Indexed (May 30, 2024) · Year (2024)
Exposure: 16.5M records · 2 fields: Email Address, Password
Status: Compilation
Executive Summary
In May 2024, an international law-enforcement coalition led by Europol conducted "Operation Endgame," the largest-ever operation against botnets, dismantling dropper/botnet malware (IcedID, SystemBC, Pikabot, SmokeLoader, Bumblebee, Trickbot) tied to at least 15 ransomware groups. Credentials seized from the malware infrastructure were provided to Have I Been Pwned, which loaded ~16.5 million email addresses and ~13.5 million unique passwords (marked subscription-free for domain owners to search) so victims could be notified. This is a law-enforcement-sourced malware-victim credential dataset, not a breach of a single organization; the underlying exposure stems from infostealer/botnet infections on victim devices.
ObscureIQ assessment: Exposure of this data can identify individuals involved in cybercrime, enable prosecution, and create downstream risks including retaliation, doxxing, or intelligence exploitation.
Breach Impact
The dataset represents victims whose credentials were stolen by botnet/dropper malware and seized during the takedown. Have I Been Pwned loaded ~16.5 million email addresses and ~13.5 million unique passwords (flagged subscription-free) so affected people and organizations could learn they were compromised. For those victims, the underlying malware infection implies broad credential-theft exposure and credential-stuffing/account-takeover risk; the law-enforcement action and notification are mitigations.
About Operation Endgame
Operation Endgame is a coordinated international law-enforcement action (led by Europol with global partners) that, beginning in May 2024, dismantled major malware "dropper"/botnet infrastructure (IcedID, SystemBC, Pikabot, SmokeLoader, Bumblebee, Trickbot) linked to numerous ransomware groups. It is a takedown operation, not a breached entity.
Why They Hold Your Data
Law enforcement operations aggregate intelligence from seized infrastructure, including logs, user identifiers, IP addresses, and operational metadata tied to criminal networks.
Recent Developments
In its May 2024 phase, Operation Endgame took down ~100+ servers and seized 2,000+ domains; subsequent phases (through 2025) dismantled additional infrastructure such as the Rhadamanthys infostealer, VenomRAT, and the Elysium botnet (1,025+ servers). Law enforcement provided seized victim credentials to Have I Been Pwned for notification.
Data Points Exposed
2 verified field types
Email Address
Password Critical
Field names are shown in full for clarity and search visibility. Canonical machine keys are emitted only in this page’s structured data.
Exploitation & Downstream Threats
Threat Activity:High
Primary downstream threats:
- Credential stuffing and account takeover against reused passwords stolen by malware
- Broad account compromise for malware-infected victims (browser-stored credentials)
- Targeted phishing using exposed emails
- Note: LE notification via HIBP is a mitigation, prompting victims to reset credentials and clean infections
Threat vectors:
- Credential stuffing & account takeover
- Malware-enabled credential theft
- Password reuse exploitation
- Phishing, credential stuffing & account takeover
Threat Actor: Malware operators (IcedID, SmokeLoader, Trickbot, Pikabot, SystemBC, Bumblebee) - infrastructure seized by law enforcement
Malware operators (IcedID, SmokeLoader, Trickbot, Pikabot, SystemBC, Bumblebee) - infrastructure seized by law enforcement
Malware / Infostealer
Attribution and method are based on available breach intelligence. Reported attack vector: Malware / Infostealer.
Recommended Actions
If you believe your information may be included:
Change Reused Passwords
Update this account and anywhere you reused the password; use a manager.
Enable MFA Everywhere
Turn on multi-factor authentication on email first, then financial accounts.
Report & Recover
If you spot misuse, start an official recovery plan and report fraud.
Frequently Asked Questions
What happened in the Operation Endgame breach?▾
In May 2024, an international law-enforcement coalition led by Europol conducted "Operation Endgame," the largest-ever operation against botnets, dismantling dropper/botnet malware (IcedID, SystemBC, Pikabot, SmokeLoader, Bumblebee, Trickbot) tied to at least 15 ransomware groups. Credentials…
What data was exposed?▾
Verified fields include Email Address, Password.
What should I do if I was affected?▾
Change reused passwords, enable MFA, and (if identity or financial data is involved) freeze your credit and monitor your accounts.
Sources & References
Every claim on this page is traceable. This breach draws on:
Breach Index
ObscureIQ Intelligence
ObscureIQ proprietary analysis
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