7 - Seizure of computer data, depending on what is deemed to be most appropriate or proportional, taking into account the interests of the case, may take the following forms: a) Seizing the computer system support equipment or the computer-data storage medium, as well as devices required to read data; b) Making a copy of those computer data, in an autonomous means of support, which shall be attached to the file; c) Maintaining by technological means the integrity of data, without copying or removing them; or d) Removing the computer data or blocking access thereto. 8 - In the situation of seizure provided for in point b) of the preceding paragraph, copies shall be made in duplicate, one of them being sealed and entrusted to the court clerk of services where the case has been brought and, where technically possible, seized data shall be certified by means of a digital signature. Article 17 Seizure of emails or similar communication records Where, in the course of a computer system search, or of another legitimate means of access to a computer system, emails or similar communication records are found, stored in that computer system or in another system which can be lawfully accessed from the former, the competent judicial authority shall authorize or order the seizure of data deemed to be of major interest to uncover the truth or to collect evidence, applying as appropriate the regime of seizure of correspondence provided for in the Criminal Procedure Code. Article 18 Interception of communications 1 – The interception of communications shall be permitted in proceedings on criminal offences: a) Provided for herein; or b) Committed by means of a computer system or which require the collection of electronic evidence, where such criminal offences are provided for in article 187 of the Criminal Procedure Code. 2 - Interception and record of transmission of computer data shall only be authorized during the investigation stage, where there are reasons to believe that this measure is essential to the uncovering of the truth or that, otherwise, it would be impossible or very difficult to obtain evidence, on the basis of a substantiated order from the examining judge, further to a request from the Public Prosecution. 3 - The interception may concern the record of data on the content of communications or aim only at the collection and record of traffic data, and the order referred to in the preceding