I'd just build a wooden box that can slip over all the taps. The bottom side would be open and you can add one of these screw in thread thingys (Screws into wood, but has thraeds on the other end), you can use wing nuts to secure the bottom board.
You could even just do that with one board or piece of metal. Put two bolts through your fridge and again use your wingnuts to secure your wood or bar to the taps, so they can't be pulled forward.
You could even just do that with one board or piece of metal. Put two bolts through your fridge and again use your wingnuts to secure your wood or bar to the taps, so they can't be pulled forward.