Data exfiltration

Data exfiltration is when unauthorized data is moved out of a network, often without the owner's knowledge. Attackers use this method to steal information like customer data, login credentials, or business secrets. They might do this through hidden channels, like encrypted connections or by embedding data in normal traffic.

What it means

Data exfiltration happens when an attacker gains access to a network and starts copying data to a location they control. This can occur through malware, insider threats, or compromised accounts. The stolen data is then used for various purposes, including selling it on the dark web or using it for further attacks.

Why it matters

Data exfiltration is dangerous because it can lead to data breaches, financial loss, and reputational damage. Even if your network is secure, a single compromised device or account can allow attackers to steal large amounts of data. This is why monitoring network traffic and securing access points is crucial.

What to do

To prevent data exfiltration, use strong access controls, monitor network traffic for unusual activity, and regularly update software to fix security flaws. Also, train employees to recognize phishing attempts and follow secure data handling practices.