Pokemon Go has long had a problem with spoofers - players who use third party GPS programs to trick the game into believing they're in a different location. Players have used spoofing programs (in conjunction with third party trackers) to quickly find and catch rare Pokemon and place them in low-traffic gyms to accumulate coins and XP.
Spoofing has been a problem since Pokemon Go's earliest days and helped contribute to many of the game's problems in the metagame, which is centered around holding and capturing Pokemon gyms. Spoofers have used bot programs to automatically target gyms, making it basically impossible for normal players to hold them.
Pokemon Go has tried fighting back against spoofing and bot users for months, most notably with a series of "ban waves" targeting automated accounts. However, it appears that Pokemon Go is now working on a more permanent solution.
Niantic (the makers of Pokemon Go) recently set up a Support account on Twitter to give fans more access to staff that can help them with issues related to Pokemon Go and other games. The support account recently confirmed that the company was working on a way to finally stop spoofing.
Thanks for all your reports. We’re working to add functionality to stop spoofing, and your reports are helping us with our investigations.— Niantic Support (@NianticHelp) April 18, 2017
A short time later, Android released a new software update (7.1) that temporarily halted most GPS spoofing programs from working...at least temporarily. Obviously, Android's software update has nothing to do with Pokemon Go fighting spoofers, but it's nice to see that multiple parties are fighting back against spoofers.
WWG will continue to update you on Pokemon Go's quest to fixing one of the most annoying and frustrating parts of the game.