If a computer user fails to log off, the system is accessible to all.

如果一位电脑用户没有登出，所有人都可以进入该系统。

《柯林斯英汉双解大词典》

It's time to leave the office for the night. Firstly I log off my computer, then I set the electronic security system.

是时间离开办公室了，首先我得注销我得电脑，然后我设置电子安全系统。

youdao

Management of commands that run automatically when users log onto the computer system.

用户登录到计算机系统时自动运行命令的管理。

youdao

Keys is charged with giving the hacking group Anonymous the log-in credentials to the computer system of The Tribune Co.

WSJ: Social media editor in court on hacking charges