Captured!! 12-year-old security threat to Justin Bieber

TMZ has learned the secret identity of the deadly and merciless force that nearly penetrated Justin Bieber's security this weekend -- and here she is ... at your own risk ... AN ADORABLE 12-YEAR-OLD GIRL!



TMZ spoke to 12-year-old Cristina's father (who also provided us with this photo) and we've learned the recent security breach in the Bahamas was all over -- DUN DUN DUN! -- a hug.

That's