Users should guarantee the security of one's own account number by oneself, often change the password, and the behavior made to this account number is totally responsible for.

用户应该自行保证自己账号的安全性，时常更换密码，并且对该账号所做出的行为完全负责。

youdao

Article 10: "business traded for one's own account" shall refer to foreign exchange trading engaged in by members for the normal operation of their own foreign exchange business.

第十条自营业务指会员为其自身外汇业务的正常进行而从事的外汇交易。

youdao

The kyoei gaisha have their own club, and between them its 260 members account for about one-fifth of Matsushita's parts purchases.

ECONOMIST: Business-to-business in Japan