Incident Response Checklist 🚨 Immediate Actions (0-24 hours) Alert all employees about the ongoing phishing campaign and advise caution with emails containing attachments, QR codes, or calendar invites. Update email security filters to detect and quarantine emails with password-protected PDFs and QR codes. Disable automatic calendar invite acceptance in email clients for all users. Increase monitoring on email and network traffic for signs of phishing attempts and unusual user behavior. 🔄 Recovery Actions Restore any affected systems or accounts from secure backups. Re-enable email access for users after confirming their accounts are secure. Update and patch email clients and security tools to address any vulnerabilities exploited by the attackers. Conduct a company-wide password reset, emphasizing the use of strong, unique passwords.