Microsoft Defender's web protection helps protect you against malicious sites that are being used for phishing or spreading malware. Available on Windows, Android, and iOS.

Learn how to use encryption and other security settings to protect messages sent from Outlook.

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

A phishing email is an email that appears legitimate but is actually an attempt to get your personal information or steal your money. Some deceptive emails appear to be from a safe sender but, in fact, have a "spoofed" source address to fool you. Here are some ways to deal with phishing and spoofing scams in Outlook.com. Spoof intelligence in Exchange Online Protection helps prevent phishing ...

With online threats getting more advanced day by day, it is important to prioritize the safety of your web browsing. Microsoft Edge offers several features and practices that can enhance your online security and protect your personal information. Follow these guidelines to browse the web securely in Microsoft Edge.

在电子邮件的密件抄送 (密件抄送) 字段中输入收件人的姓名时，该收件人将收到电子邮件副本，而其他收件人看不到其姓名。 为正在使用的 Outlook 版本选择以下选项卡选项。 我的 Outlook 是哪个版本 ？

Learn more about the advanced security features for Outlook.com that come with an Office 365 Home or Office 365 Personal subscription.

Learn how to keep your Microsoft account safe, including making a strong password, identifying safe emails, and reviewing account activity.

取得您用於 Microsoft 之帳戶的說明。 瞭解如何設定 Microsoft 帳戶、保護它，以及如何使用它來管理您的服務和訂閱。

You can apply sensitivity labels to your files and emails to keep them compliant with your organization's information protection policies. Sensitivity labels are configured by your administrator and because they're published to users rather than locations such as sites and mailboxes, users in the same organization might see different sensitivity labels to apply. Sensitivity labels help ...