September 2026 Security Review Highlights Post-Breach Abuse of Legitimate Access

A September 2026 security review found attackers increasingly using legitimate system connections and privileges to move laterally after initial infiltration. The analysis highlighted two major incidents: exploitation of Citrix NetScaler vulnerabilities and a Microsoft Azure breach where stolen identities accessed development pipelines. A key lesson is that defense requires limiting what compromised accounts and automated processes can do, not just strengthening perimeter security. The report also noted the need for clearer governance over AI execution capabilities in security contexts. These cases are analyzed as specific incidents, not as indicators of a broader trend in attack frequency.