Smaller organizations, which sometimes provide overseas security, are thought to be more numerous, but are hard to track little more than a company president and a Rolodex full of names.

• 一些较小的机构有时也提供海外安全服务，据说这类公司数量更多，但却很难找到一公司小到只有一位公司经理和一个写满名字的花名册。