<p>The Social Engineering is focused on deception and persuasion that can be through technology or psychology, in order to get inside information; this is also used by indirect contact with the victim, The Dumpster Diving or Trashing is one of these types of social engineering attacks in which private information (emails, passwords, phone numbers, numbers of bank account, numbers the identity card, etc) through indirect approaches to the victim (Looking through her trash). The problem of this research is the lack of knowledge and preventive / corrective control on handling residual data (information) displayed on the waste generated by the various companies, organizations and institutions in the city of Tunja as this can lead a computer-based attack sensitive or private information obtained by “trashing”. Given that what is stated as ‘waste’ contains incorrect or false information, this research we want to analyze and demonstrate that this technique “Trashing” is a result of transmission of important information for any entity, in fact businesses are unaware of the risk who are against this type of oversights, so the need to diagnose security measures, training and employee training in this regard, as well as the creation of protocols for data removal, either from the field of new technologies, or from conventional methods (paper shredders or outsource) and criminal options include these internal audits.</p>