Data Exfiltration
N/A
数据外泄
Data Exfiltration · N/A · 数据外泄 · DAY-tuh eks-fil-truh-RAY-shun · data theft · exfil · Cybersecurity · breach · privacy · threatsCybersecuritydata theft exfil/DAY-tuh eks-fil-truh-RAY-shun/
Also known as: data theft, exfil
Last updated August 9, 2026
Definition
Data exfiltration is unauthorized transfer of sensitive data out of an organization — via upload, email, cloud sync, or covert channels.
Real-World Example
Malware compressing customer records and uploading them to an attacker-controlled cloud bucket is exfiltration.
References
Related terms
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