Open the digitally signed message. Look at the Signed By status line to check the email address of the person who signed the message. It isn't enough to check the email address in the From line—you want to verify who actually signed the message, not only who sent the message.

To maintain this security, Xbox monitors for instances of marketplace theft or solicitation from the Xbox community. Fraud affects everyone, and most publishers and developers have their own sets of rules for combatting fraudulent purchases.

A digital signature is an electronic, encrypted, stamp of authentication on digital information such as email messages, macros, or electronic documents. A signature confirms that the information originated from the signer and has not been altered.

The Signature Details dialog box displays certificate information such as the signer’s name in the Signing as box, and who issued the certificate. Open the file that contains the certificate you want to view.

On iOS do what Apple calls a "Light, long-press". Never click any links or attachments in suspicious emails or Teams messages. If you receive a suspicious message from an organization and worry the message could be legitimate, go to your web browser and open a new tab.

Get in-app help for Outlook for iOS and Android. What can you do in-app? Access the in-app FAQs in Outlook for iOS or Android. Was this information helpful?

Learn what to do if you see error 0x803F9006 when you start a game or app on your Xbox console.

A digital signature is used to authenticate digital information — such as form templates, forms, e-mail messages, and documents — by using computer cryptography. Once a form is signed, either the entire form or part of the form that was signed cannot be altered without invalidating the signature.

An invisible digital signature, like a visible digital signature line, assures the authenticity, integrity, and origin of a document. You can add invisible digital signatures to Word documents, Excel workbooks, and PowerPoint presentations.

The Outlook Team fixed the root cause issue that was preventing signature sync. Initially the fix is available in the Beta Channel and Current Channel Preview with Version 2411 (Build 18205.15010).