All data is validated at its point of entry. Anything on the outside is assumed to be suspect, and after it has run the gauntlet and been allowed inside, it is assumed to be pristine.

• 所有数据在输入点都要经过检查，外部的任何事物都是怀疑对象。 在经过严格检查允许输入后，它被认为是纯洁的。