Contingency plans administered in computer centers are necessary for business continuity since organizations not only store or process data to offer different service platforms. Organizations could experience different repercussions facing external or internal risks affecting their investments. The fact of having computer support for unwanted events that affect devices is important. Cyber-attacks in data networks lead to a serious problem due to economic damages that an unauthorized intrusion entails. A contingency plan for cyber-attacks can cover just technical issues. However, these are long term projects with continuous execution and improvement, since necessary tasks master for going from production to contingency, and then reversing the changes in the case whether an emergency or an unexpected event occurs. This paper aims to be a framework reference about how to cope with a situation of cyber-attack.