ThreatLocker is a United States-based company founded in 2017 that specializes in security software within the broader software industry. With an employee count between 501 and 1,000 and an annual revenue of approximately $125 million, the company focuses on enhancing enterprise-level server and endpoint security through its Zero Trust Endpoint Protection Platform. A key aspect of ThreatLocker’s offerings is its Application Allowlisting solution, which proactively blocks cyber threats, including ransomware and zero-day attacks, by allowing only approved applications to run. The company has developed resources, such as its whitepaper on the Essential Eight, which outlines critical strategies for organizations to defend against cyberattacks. These strategies include application control, restricting administrative privileges, user application hardening, and implementing multi-factor authentication, among others. ThreatLocker aims to simplify the implementation of these strategies, thereby improving the overall security posture of its clients. The company’s solutions are compatible with multiple operating systems, including Windows, Linux, and macOS.