Glossary

Data Exfiltration

Data exfiltration is the getaway - it's when hackers actually steal your data by sending it out of your network to themselves. They might compress it, encrypt it, or disguise it as normal traffic. Once data leaves your network, you've lost control of it forever.

What is Data Exfiltration?

The unauthorized transfer of data from a computer or network, typically the final stage of a cyberattack where stolen information is sent to attacker-controlled systems.

Why Should You Care?

Understanding data exfiltration is essential for building a strong security posture. This knowledge helps organizations identify threats early and respond appropriately.

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Real-World Example

Security teams regularly encounter data exfiltration in their day-to-day operations. Recognizing and responding to these scenarios is a core security competency.

How to Protect Against Data Exfiltration

  1. 1.

    Implement Data Loss Prevention (DLP) tools

  2. 2.

    Monitor for large outbound data transfers

  3. 3.

    Restrict USB and cloud storage usage

Related Terms

Data Breach, Command And Control, Encryption

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