Exam ISO-IEC-27001-Lead-Auditor Topic 2 Question 302 Discussion

Scenario 3: NightCore is a multinational technology company based in the United States that focuses on e-commerce, cloud computing, digital streaming, and artificial intelligence. After having an information security management system (ISMS) implemented for over 8 months, they contracted a certification body to conduct a third party audit in order to get certified against ISO/IEC 27001.
The certification body set up a team of seven auditors. Jack, the most experienced auditor, was assigned as the audit team leader. Over the years, he received many well known certifications, such as the ISO/IEC 27001 Lead Auditor, CISA, CISSP, and CISM.
Jack conducted thorough analyses on each phase of the ISMS audit, by studying and evaluating every information security requirement and control that was implemented by NightCore. During stage 2 audit. Jack detected several nonconformities. After comparing the number of purchased invoices for software licenses with the software inventory, Jack found out that the company has been using the illegal versions of a software for many computers. He decided to ask for an explanation from the top management about this nonconformity and see whether they were aware about this. His next step was to audit NightCore's IT Department. The top management assigned Tom, NightCore's system administrator, to act as a guide and accompany Jack and the audit team toward the inner workings of their system and their digital assets infrastructure.
While interviewing a member of the Department of Finance, the auditors discovered that the company had recently made some unusual large transactions to one of their consultants. After gathering all the necessary details regarding the transactions. Jack decided to directly interview the top management.
When discussing about the first nonconformity, the top management told Jack that they willingly decided to use a copied software over the original one since it was cheaper. Jack explained to the top management of NightCore that using illegal versions of software is against the requirements of ISO/IEC 27001 and the national laws and regulations. However, they seemed to be fine with it.
Several months after the audit, Jack sold some of NightCore's information that he collected during the audit for a huge amount of money to competitors of NightCore.
Based on this scenario, answer the following question:
According to scenario 3, which audit principle has Jack compromised when he sold NightCore's information after the audit?