University of Phoenix Data Breach Exposes Records of Nearly 3.5 Million Individuals

The University of Phoenix has confirmed a major cybersecurity incident that exposed the financial and personal information of nearly 3.5 million current and former students, employees, faculty members, and suppliers. The breach is believed to be linked to the Clop ransomware group, a cybercriminal organization known for large-scale data theft and extortion. The incident adds to a growing number of significant cyberattacks reported in 2025. 

Clop is known for exploiting weaknesses in widely used enterprise software rather than locking systems. Instead, the group steals sensitive data and threatens to publish it unless victims pay a ransom. In this case, attackers took advantage of a previously unknown vulnerability in Oracle Corporation’s E-Business Suite software, which allowed them to access internal systems. 

The breach was discovered on November 21 after the University of Phoenix appeared on Clop’s dark web leak site. Further investigation revealed that unauthorized access may have occurred as early as August 2025. The attackers used the Oracle E-Business Suite flaw to move through university systems and reach databases containing highly sensitive financial and personal records.
 

The vulnerability used in the attack became publicly known in November, after reports showed Clop-linked actors had been exploiting it since at least September. During that time, organizations began receiving extortion emails claiming financial and operat

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