The objective of the project is to estimate the factors influencing the propensity to secure personal data in companies. In particular, protection policies will be analyzed at the same time as those related to computer security. Answers to four questions are sought: 1. Do the companies that outsource data mining the most protect the data the most or the least? 2. What is the impact of business digitization on the protection of personal data? 3. Which companies reply that the protection of personal data is not relevant or does not apply to them? 4. What is the relationship between the protection of personal data and the importance of IT security policies? Is the first a subset of the second? Are they complementary? The answers to the above questions will make it possible to establish a four-axis typology of companies according to the nature of the protected data (internal / external).