Jason is computer professional who has access to sensitive information. he shares this information with another organization in the same industry. which professional code of conduct did jason violate?

Jason violated the confidentiality of information.

Part of information security is "confidentiality of information" wherein an employee must kept all the information he may acquire when he is working in a company, confidential. When we say confidential, he is not allowed to disclose anything that he may know about company's operation, sensitive information to anybody who is outside the company (like in the example, another organization). Because data that he might disclose may get on hands by company's competitors and it can be used against the company. They might steal ideas and strategies.