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 The message looks common enough, and it says that money will be charged to your credit card or withdrawn from your bank account for the ...

Certificate authority (CA) A certificate authority is an entity similar to a notary public. It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired. Top of Page Digital signature assurances The following terms and definitions show what assurances are provided by digital signatures. Authenticity The signer is ...

To learn about digital signatures (also known as digital ID), what they can be used for, and how to use them in Word, Excel, and PowerPoint, see All about digital signatures. Create a signature line in Word or Excel (desktop) In the document or worksheet, place your pointer where you want to create a signature line. On the Insert tab, select Add a Signature Line in the Text group. In the ...

从 2025 年 3 月 19 日开始，不再支持适用于移动设备的 Xbox Game Pass。 获取有关其他设备上的云游戏的详细信息。

Xbox Support ... Xbox Support

Find out what to do if you receive a sign-in error when your age is verified.

在 Apple 裝置上進行雲端遊戲 全部展開 在您支援的網頁瀏覽器上播放 請確定您具備最低系統需求

Signing your email messages with a digital ID helps to prove your identity and prevent message tampering.

找尋您需要了解的有關 Xbox 玩家代號的所有資訊。

Learn how to identify and open encrypted and protected emails no matter what email client you're using.