# T1558: Steal or Forge Kerberos Tickets Adversaries may attempt to subvert Kerberos authentication by stealing or forging Kerberos tickets to enable Pass the Ticket. Kerberos is an authentication protocol widely used in modern Windows domain environments . In Kerberos environment, referred to as "realms", there are three basic participants: clients, service, and Key Distribution Center (KDC). Clients request access to a service and though=rough the exchange of Kerberos tickets.=, originating from KDC, they are granted access after having successfully authenticated. The KDC is responsible for both authentication and ticket granting. Attackers may attempt to abuse Kerberos by stealing tickets or forging tickets to enable unauthorized access. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://dmcxblue.gitbook.io/red-team-notes-2-0/red-team-techniques/credential-access/t1558-steal-or-forge-kerberos-tickets.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.