Possible solutions to protect individuals’ privacy that companies can (must) implement.

What possible privacy solutions can organisations apply to protect their users? Is there any measure that is 100% efficient? Or is it about combining different measures?
What Open Source tools Comunidad Valenciana has implemented, and what aspects should be improved.

What Open Source tools the Comunidad Valenciana has implemented in the education area, and what are the improvements that must be implemented to protect, even more, their students’ privacy.