Security Concerns in Design Studio

Dear students,
recently items have gone missing from our design studios. In addition to this some students have advised me that their personal effects (visual diaries, books etc...) have been rifled through and their desks disturbed. Please be very vigilant about keeping valuables in your lockers and please do not hesitate to advise me if you see anyone in studio who shouldn't be there or who is being disrespectful of your work space and belongings,
with best regards,