The unauthorized transfer of data from a computer or network.
Description
Exfiltration in cybersecurity refers to the process of extracting sensitive data from a compromised system or network without authorization. This can occur through various methods, including malware, insider threats, or exploiting vulnerabilities in software. Exfiltration is often a key goal for cybercriminals who seek to obtain personal information, intellectual property, or sensitive corporate data. Once the data is extracted, it can be sold on the dark web, used for identity theft, or leveraged for corporate espionage. High-profile cases, such as the 2017 Equifax data breach, highlight the severe consequences of exfiltration, where the personal information of 147 million people was stolen. Organizations must implement robust security measures, including encryption, intrusion detection systems, and regular audits, to prevent data exfiltration and protect their sensitive information from unauthorized access.
Examples
- The 2014 Sony Pictures hack, where attackers exfiltrated unreleased films and sensitive employee information.
- The 2020 SolarWinds cyberattack, during which attackers exfiltrated data from multiple U.S. government agencies.
Additional Information
- Exfiltration may involve the use of steganography, where data is hidden within innocuous files to avoid detection.
- Organizations can use data loss prevention (DLP) tools to monitor and prevent unauthorized data transfers.