How to prevent hacking of mobile hotspot?

[neku]

I have reason to believe that a wifi network or equipment installed in the vicinity is being used to hack my mobile hotspot. Whenever I am making a payment or similar important work, the mobile hotspot, internet connection suddenly disappears, wasting time. How to prevent the hacking of the mobile hotspot?

 

[freelancermaria]

To be honest, I am not sure about that. Maybe you can use your own data to do your online transactions.