3. Member States shall ensure that victims of trafficking in human beings receive appropriate protection on the basis of an individual risk assessment, inter alia, by having access to witness protection programmes or other similar measures, if appropriate and in accordance with the grounds defined by national law or procedures.
4. Without prejudice to the rights of the defence, and according to an individual assessment by the competent authorities of the personal circumstances of the victim, Member States shall ensure that victims of trafficking in human beings receive specific treatment aimed at preventing secondary victimisation by avoiding, as far as possible and in accordance with the grounds defined by national law as well as with rules of judicial discretion, practice or guidance, the following:
(a) unnecessary repetition of interviews during investigation, prosecution or trial;
(b) visual contact between victims and defendants including during the giving of evidence such as interviews and cross-examination, by appropriate means including the use of appropriate communication technologies;
(c) the giving of evidence in open court; and
(d) unnecessary questioning concerning the victim’s private life.