The Server files got leaked and now some people make what they want.
ALso zh1nt0 wrote in twitter:
So do not join Server which has "Operation Metro - Conquest" it is to 100% cracked.@zh1nt0 Daniel Matros wrote:Please use 32 player max only servers. We cannot guarantee your account security otherwise. #BF3BETA
At the moment some people says that they bring you up to level 145, others say that your acc gets resetted.
Also they hack your Account with E-Mail, Bank etc.