Information corruption refers to a violation of law and discipline by a person who has public power in his hand, borrows his own power to obtain certain special information, and then uses this monopoly information to engage in certain profit-making activities. According to the above definitions, Which of the following are related to information corruption:. ['A cadre of a bureau of the city government has bribed relevant personnel for personal promotion and has repeatedly modified personal file information.', 'A law school professor used privately stolen qualification exam papers to tutor the students in order to make his graduate class into a brand.', 'Director Wang of the Provincial Department of Science and Technology went to work for a company after leaving office. He innovated a certain technology he researched and developed a new product with great market competitiveness for the company.', 'The deputy mayor of the Long District leaked confidential information such as the project bidding registration, performance requirements of the bidding company, and the method of winning the bid to a bidding company, and received more than 500,000 yuan from the company.']