The root cause of all this is the leaked document about a possible backdoor installed within Petrobras IT infrastructure. Since this company has a lot of employ

The root cause of all this is the leaked document about a possible backdoor installed within Petrobras IT infrastructure. Since this company has a lot of employees at high/strategic positions nominated directly by the government, we assume that there is a continued information exchange between them and the government, and that this information is so sensitive it could expose high scale politicians to the media in an uncontrolled way (a situation which the current political party in power tries to avoid at all cost). In short, the government knows there is a lot of dirt under the Petrobras rug, and all those actions we read in the article refers to putting heavy furniture on top of it.