The Department of Homeland Security's Enhanced Cybersecurity Services (ESC) is a voluntary information sharing program that assists critical infrastructure owners and operators as they improve the protection of their systems from unauthorized access, exploitation, or data exfiltration. DHS works with cybersecurity organizations from across the federal government to gain access to a broad range of sensitive and classified cyber threat information. DHS develops indicators based on this information and shares them with qualified Commercial Service Providers (CSPs), thus enabling them to better protect their customers who are critical infrastructure entities. ECS augments, but does not replace, an entities' existing cybersecurity capabilities.
The ECS program does not involve government monitoring of private networks or communications. Under the ECS program, information relating to threats and malware activities detected by the CSPs is not directly shared between the critical infrastructure CSP customers and the government. However, when a CSP customer voluntarily agrees, the CSP may share limited and anonymized information with ECS.
In February 2013, Executive Order 13636: Improving Critical Infrastructure Cybersecurity expanded ECS to each of the 16 critical infrastructure sectors. As a result of increased demand and need for cybersecurity protection across the nation, the ECS program has since expanded further and now allows approved CSPs to extend their ECS customer base to all U.S.-based public and private entities. 
In 2013, the Defense Industrial Base Cyber Pilot was merged with the Enhanced Cybersecurity Services program.