![]() ![]() For more information, see Secure by Default in Office 365. ZAP for high confidence phish is enabled by default. For more information, see Quarantine policies But, admins can create and use quarantine policies to define what users are allowed to do to messages that were quarantined as high confidence phishing. By default, only admins can view and manage quarantined high confidence phish messages. Zero-hour auto purge (ZAP) for high confidence phishingįor read or unread messages that are identified as high confidence phishing after delivery, ZAP quarantines the message. Quarantine message: ZAP quarantines the message.īy default, ZAP for phishing is enabled in anti-spam policies, and the default action for the Phishing email filtering verdict is Quarantine message, which means ZAP for phishing quarantines the message by default.įor more information about configuring spam filtering verdicts, see Configure anti-spam policies in Microsoft 365. For more information, see Configure junk email settings on Exchange Online mailboxes in Microsoft 365. Move message to Junk Email: ZAP moves the message to the Junk Email folder. The available filtering verdict actions for phishing and their possible ZAP outcomes are described in the following list:Īdd X-Header, Prepend subject line with text, Redirect message to email address, Delete message: ZAP takes no action on the message. ![]() Zero-hour auto purge (ZAP) for phishingįor read or unread messages that are identified as phishing after delivery, the ZAP outcome depends on the action that's configured for a Phishing email filtering verdict in the applicable anti-spam policy. For more information, see Configure anti-malware policies in EOP. ZAP for malware is enabled by default in anti-malware policies. ![]() For more information, see Quarantine policies. But, admins can create and use quarantine policies to define what users are allowed to do to messages that were quarantined as malware. By default, only admins can view and manage quarantined malware messages. Zero-hour auto purge (ZAP) for malwareįor read or unread messages that are found to contain malware after delivery, ZAP quarantines the message that contains the malware attachment. Watch this short video to learn how ZAP in Microsoft Defender for Office 365 automatically detects and neutralizes threats in email. This is another reason to be careful about configuring messages to bypass filtering. Similar to what happens in mail flow, this means that even if the service determines the delivered message needs ZAP, the message is not acted on because of the safe senders configuration. Safe sender lists, mail flow rules (also known as transport rules), Inbox rules, or additional filters take precedence over ZAP. The ZAP action is seamless for the user they aren't notified if a message is detected and moved. ![]() ZAP can find and remove messages that are already in a user's mailbox. ZAP addresses this issue by continually monitoring updates to the spam and malware signatures in the service. However, users can still receive malicious messages for a variety of reasons, including if content is weaponized after being delivered to users. Spam and malware signatures are updated in the service real-time on a daily basis. ZAP doesn't work in standalone Exchange Online Protection (EOP) environments that protect on-premises Exchange mailboxes. In Microsoft 365 organizations with mailboxes in Exchange Online, zero-hour auto purge (ZAP) is an email protection feature that retroactively detects and neutralizes malicious phishing, spam, or malware messages that have already been delivered to Exchange Online mailboxes. Microsoft Defender for Office 365 plan 1 and plan 2.Zero-hour auto purge (ZAP) in Exchange Online ![]()
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