how to find tools audit risk management?

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nowsdays,many companies,espcally international corporations,has trade secrets that would be disastrous if they fell into the wrong hands.because of this ,companies audits practices now commonly include not only operational audits and computer audit,but audit risk management as well. but ,how to find tools audit risk mangement?we know the main function of the risk management audit is to ensure sensitive data and other valuable company assets are properly sefeguarded and protected.but,how to control who has access to certain sensitive data?