171 Safeguards relating to the retention and disclosure of data

Restrictions on use or disclosure of data obtained under warrants etc

171  Safeguards relating to the retention and disclosure of data

(1)     The Secretary of State must ensure, in relation to every bulk acquisition warrant, that arrangements are in force for securing—

(a)     that the requirements of subsections (2) and (5) are met in relation to the communications data obtained under the warrant, and

(b)     that the requirements of section 172 are met in relation to that data.

This is subject to subsection (8).

(2)     The requirements of this subsection are met in relation to the communications data obtained under a warrant if each of the following is limited to the minimum that is necessary for the authorised purposes (see subsection (3))—

(a)     the number of persons to whom any of the data is disclosed or otherwise made available,

(b)     the extent to which any of the data is disclosed or otherwise made available,

(c)     the extent to which any of the data is copied,

(d)     the number of copies that are made.

(3)     For the purposes of subsection (2) something is necessary

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