This article describes the contrast between the translation technique of the Integral Terminological Anglicisms (ITAs) in a textual bilingual English-Spanish corpus, and the writing forms in a monolingual corpus of the scope of computing security. This study makes a contribution to the area of translation from Terminology, due to it was done from Terminological Units in vitro. Thus, English-Spanish translation techniques of 13 ATIs were contrasted with the writing forms of the same units in Spanish, from the Los ATIs (Anglicismos Terminologicos Integrales):analisis contrastivo entre la tecnica de traduccion en un corpus textual y las formas de escrituraen un corpus de referencia 5 Communicative Theory of Terminology, based on translators and specialists. The study was empirical descriptive because on the one hand, a quantitative analysis of the frequency of occurrence of terms and their different forms was done, and on the other, there was also a qualitative analysis, since the behavior of ATIs in different contexts was observed and described. The research arose from the need to make visible the processes and techniques used in the translation of specialized texts, in order to broaden the understanding of such techniques and enrich this process, since there was no a scientifically valid proposal to resolve the problem of translation of the ATIs. Finally, it became clear that the only translation technique for the ATIs is the loan; the italics (Cur) and the parentheses () are the most common writing forms for the ATIs in Spanish, in addition to other writing forms such as Spell Variation. The disparity among both, translators and experts, was also stressed in the management of the ATIs.