Act 2 Computer Misuse Act 2011 7. Modification of contents. A modification of the contents of any computer takes place if, by the operation of any function of the computer concerned or any other computer connected to it result into— (a) a program, data or data message held in the computer concerned being altered or erased; or (b) a program, data or data message being added to its contents. 8. Unauthorised modification. Modification is unauthorised if— (a) the person whose act causes it, is not entitled to determine whether the modification should be made; and (b) he or she does not have consent to the modification from a person who is entitled. PART III—INVESTIGATIONS AND PROCEDURES. 9. Preservation Order. (1) An investigative officer may apply to court for an order for the expeditious preservation of data that has been stored or processed by means of a computer system or any other information and communication technologies, where there are reasonable grounds to believe that such data is vulnerable to loss or modification. (2) For the purpose of subsection (1), data includes traffic data and subscriber information. (3) An order made under subsection (1) shall remain in force— (a) until such time as may reasonably be required for the investigation of an offence; or (b) where prosecution is instituted, until the final determination of the case or until such time as the court deems fit. 8