The Facebook-Cambridge Analytica scandal (Links to an external site.) brought to the general public awareness the potential outcomes of having personal data collected by social networks. What most people dont know is that personal data collection is carried out by a much wider set of Internet-based entities, without the knowledge of the individuals that relate to these entities.

The video Data Brokers describes how private companies use Internet communication traffic to tap into private, otherwise inaccessible information for financial gain. Defenders of these actions argue that the data is only used for the benefit of consumers.

Alternatively, various governmental agencies secretly monitor and collect private data from the Internet for the sake of national security, as denounced by Edward Snowden in the video "Edward Snowden: The Whistblower behind the NSA surveillance".

1) Based on the ethics principles stated above, Is data brokerage ethical? Please provide a good explanation with details.