Data exfiltration is often a primary goal during cybersecurity attacks. In 2021, over 80% of ransomware attacks threatened to exfiltrate data. Adversaries target specific organizations with the goal of accessing or stealing their confidential data while remaining undetected, either to resell it on the dark web or to post it for the world to see.
Exfiltration during or before security attacks, mostly ransomware, happens mainly from endpoint devices. Researchers have observed adversaries leveraging legitimate file transfer utilities (FTUs) to upload sensitive data from devices to web services or cloud storage applications. Besides, adversaries generally try to evade simple security controls by renaming these FTUs.
Microsoft Purview Data Loss Prevention (DLP) for endpoint plays a major role in helping organizations detect and prevent exfiltration through common processes used by attackers today. If configured correctly, Microsoft Purview DLP can detect adversaries utilizing any FTU or cloud application to exfiltrate sensitive data from endpoint devices. Microsoft Purview DLP can also identify the execution of these tools when adversaries rename them to remain undetected.