John Rawls was a 20th century American moral and political philosopher in the liberal tradition. In A theory of justice where he argues for justice as fairness the veil of ignorance plays a central role. The veilshields those in power from knowledge of particular facts that they could use to favor some members of society - like themselves. It expresses a commitment to a sort of impartiality that is needed to ensure that the principles weselect express our commitments to fairness and equality.
Applying this to data projects you could argue that the veil of ignorance can also in this context guard the principles of fairness and equality: if it could be you that has to execute the processes and work with the systems you design, you better make sure they are well designed.
There is a lot of work on the ethics of Artificial Intelligence, but this could be a starting point to think about an ethics of Business Intelligence.
What other valuable entry points do you see into the ethics of BI?