untrusty

1. Currently most of the information systems in our country are built on foreign untrusty DBMSs, which makes us in danger in commercial competition and electronic warfare in such a complex international situation.
   目前，国内绝大多数的信息系统都以国外的非可信的数据库产品作为基础，在目前复杂的国际形势下，这使我们在商业竞争、信息战争中处于严重不利的地位。

adj

1. not worthy of trust or belief
   1. an untrustworthy person

   Synonym:    untrustworthy