A popular tactic of criminals is the "fake order" scam. The way it works is that you get a message, usually in email or text, that appears to be a routine confirmation for an order. Of course, you never ordered whatever product or service it's confirming. The message looks common enough, and it says that money will be charged to your credit card or withdrawn from your bank account for the ...

Get an error message or error code when making a purchase on Xbox? Find out what they mean.

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同样，当你在 Microsoft Outlook 收到包含 数字签名 的消息时，请务必验证签名者是否是你认为此人。 打开数字签名的消息。 查看 “已签名者” 状态行，检查签名邮件的人员的电子邮件地址。

公证性 在某些情况下，Microsoft Word、Microsoft Excel 或 Microsoft PowerPoint 文件中由安全时间戳服务器加盖时间戳的签名具有公证效力。 为了提供以上保证，内容创建者必须使用满足下列条件的签名对内容进行数字签名： 该数字签名有效。

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Learn how to prevent unauthorised purchases on your Xbox by creating Microsoft accounts for every person who uses that console.

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摘要 Email签名在业务通信中创造专业一致性，并确保收件人在每封邮件中都有你的联系信息。 在Outlook 中，可以设置多个签名， (内部与外部、个人与业务) 的不同用途，并选择是自动将其包含在新的电子邮件、答复还是转发中。