Wanted: 1323 fridge thieves

Final exam is around and it's going to end my y3s2, from last semester until now one big unsolved question, it is not exam question, but it seems like this question harder than exam question :"who are the 1323(hostel) R@t(fridge thieves)???"
3 of my housemates become victims of the R@t since 6 month ago until unknown..-.-
Q&A
What’s 1323R@t’s favorite cereal? Co-Co Crunch
What’s 1323R@t’s favorite drinks? milo & vitagen
What’s 1323R@t’s favorite dairy product? butter



Are u the one we are finding?

I had found 5 ways to prevent food from being stolen from this sites: http://knucklesunited.com/2010/01/top-5-ways-to-keep-your-lunch-from-being-stolen-at-work/
my housemates had done one from the 5 ways, which is "Leave A More Direct Message For The Thief". there also show some funny idea, ...

...haha

for me, i am more like the fridge locker




"We will catch you one day!~"