Theoretical question: Is it possible, or will it ever be possible, for an attacker to sniff/intercept it and redirect a packet, sent from a client through wireless, modify it and then sent to the original intended server address with different values?
If so what are the ways to prevent it from happening or protect our data sent through wireless networks? Would it be using routers or Wireless external cards with better encryption measures?
For example, a packet telling X website that I want to write a text (Would it be possible for an attacker to sniff those packets, intercept it before reaching the destination and change the original text?). Or, a packet from an online client game where I'm playing telling the server that I got 100 health (Would it be possible for the attacker to change this packet before reaching its destination and modify it telling instead that I've got 0 health and then send to the server with modified values)?