Identification - Impersonation / Proxy

impersonation is when a process or user are taking the identity of another process or user

impersonation is also known as proxy.

impersonation or proxy is used to:

• acts as of your were an other user in a application and taking its privileges (sudo, …). See Security - (Proxy|N-tier|Impersonation) authentication
• add a protection layer such as in reverse proxy/gateway