2025 Salesforce Supply Chain Breach Unveiled: UNC6040 and UNC6395’s Advanced OAuth Attacks
In mid-2025, cybercriminal threat clusters UNC6040 and UNC6395 launched coordinated attacks targeting the Salesforce environments of major global enterprises, leveraging supply chain compromises, OAuth token abuse, and social engineering tactics. Attackers tricked employees into authorizing malicious OAuth apps or exploited stolen access tokens, enabling mass data exfiltration from Salesforce—including sensitive 'Accounts', 'Contacts', and support case records containing credentials and cloud secrets. Stolen information was subsequently used by the ShinyHunters extortion group for ransom threats and further infiltrations, impacting organizations such as Google, Cisco, Adidas, and major cybersecurity firms. This incident exemplifies a growing wave of attacks exploiting trusted third-party platforms and identity federation weaknesses to compromise cloud SaaS data at scale. The sophisticated multi-stage approach highlights urgent risks related to SaaS supply chains, the need for robust OAuth governance, and increased vigilance toward privilege escalation via indirect access vectors.
Kill Chain
