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conducting-phishing-incident-response

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Respond to phishing incidents by analyzing reported emails, extracting indicators, sandboxing URLs/attachments, assessing credential compromise, quarantining malicious messages organization-wide, and remediating affected accounts. Use when investigating a reported phishing or credential-phishing email, a suspected spearphishing incident, or when a mailbox-wide purge and account remediation is needed.

When to use

• A user reports receiving a suspicious email via the phishing report button or abuse mailbox
• Email gateway detects a malicious email that bypassed initial filtering
• Threat intelligence indicates an active phishing campaign targeting the organization
• A user confirms they clicked a link or opened an attachment from a suspicious email
• Credentials have been entered on a suspected phishing page

When not to use

• business email compromise (BEC) involving compromised internal accounts

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