Of course, it is very important, crime in cyberspace is very high, and the most disadvantaged is us if we underestimate internet security... I once lost important data because I was not confident with the security of my device and network, from that I learned to care about security, so that my wallet was safe...
Of course we need highly security in order to keep our coins secure from stealer especially for hackers. Ever thought why a banks hired security guards? because they have to keep money safe from robbers.