Safe? Not really. There is no such thing as a risk free investment in the crypto world. I would recommend looking into BAT's existing infrastructure as well as upcoming events. BAT is supposed to be integrated into the Brave browser but still the long term usability of the project is not guaranteed. Brave has
long legal battles to fight if it becomes successful so you shouldn't give in to mob mentality about BAT. The price movements of it are mostly based on speculation (like most cryptos) other than anything else.