- Published
- Source
- BleepingComputer
- Filed under
- Attacks
Law enforcement agencies have disrupted nearly 11,000 cybercriminal networks and arrested more than 1,400 people in Operation Serengeti III, which targeted business email compromise, ransomware, and online scams.
Practical steps for any organisation
- Patch quickly, starting with anything facing the internet.
- Use multi-factor authentication everywhere it is offered.
- Keep tested, offline backups – and a plan for the day you need them.
More helpNCSC: 10 Steps to Cyber Security (opens in a new tab)NCSC: incident management (opens in a new tab)
Defender’s notebook
The attacker technique behind this story, in MITRE’s terms – and what to check in your own estate.
Impersonation
StealthWhat a defender checks
- Confirm any change of payment details on a number you already hold – never the one in the message.
- Make the help desk verify identity before resetting passwords or MFA.
- Brief finance and help-desk staff on the current pretexts.
Build the skillBlue Team Analyst · Email & Phishing Investigation
Data Encrypted for Impact
ImpactWhat a defender checks
- Isolate affected hosts from the network to stop the spread.
- Confirm backups are offline and restorable – then test a restore.
- Hunt for what came first: new admin accounts, disabled security tools, remote-access software.
Build the skillBlue Team Engineer · Incident Management & Response Engineering
© 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. MITRE ATT&CK and ATT&CK are registered trademarks of The MITRE Corporation.
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