Abstract: An object of the invention is to provide a cheap and efficient method to secure an application stored in a distant server accessible via a computer network. The invention proposes a method comprising the following steps: a) on a local server (10) having a secured administration access (11), accessing the local server with administration rights; b) creating and configuring a template (13) of a virtual server (21) in view of an exploitation of said application; c) introducing in the template (13) a sequence of instructions programmed to remove secured administration access (11) of the virtual server (21) when this later will be first boot; d) generating a virtual server (21) based on said template (13); e) first booting the generated virtual server (21) in order to remove the secured administration access (11) of said virtual server; f) launching the virtual server (21) into production.