Internal Mail Protection by INKY protects against attacks that come from within an organization. It safeguards an organization’s email traffic from Account Takeover (ATO) attacks, which occur when compromised email accounts allow hackers to infiltrate. INKY mitigates internal phishing threats using artificial intelligence that understands behavior. It builds dynamic profiles of senders with software modules using stylometry and social graphing. INKY employs anomaly detection to filter and block impersonation attempts by observing incoming emails and modeling email addresses and display names used by senders. The INKY Email Assistant gives recipients a visual cue to hesitate before reacting to an email. After INKY analyzes messages, employees receive real-time feedback on any fraudulent aspects of the message. The INKY Dashboard allows IT to find and remove dangerous messages from recipients’ mailboxes, protecting against malicious lateral movement across the internal email infrastructure.