is this product (cloud storage ) is safe on hackers..

boosteroid should also focus on the safety of their storage. may be some advanced security to protect thier consumers or costumer information and data....
Security is always been an issue even on centralized system like google, amazon and microsoft but the good thing about chainblock system is that hacking cases is almost zero. But rest assured that safety is one of the factors Boosteroid is taking priority of plus they are setting up their own facility making rental cheap.Security architecture was not fully discussed in their whitepaper but you can ask directly to their telegram chat group, you can download telegram app on google play and search Boosteroid on telegram app.