I have started development on the first affordable all in one network security device for small local businesses that offer wifi to their customers.
Currently, their are no consumer grade devices that can defend against, or even alert to, an evil twin attack on an open wifi network. Enterprise level solutions exist, but cost $3,000 or more, plus licensing fees every month. My device not only alerts to these threats, but actively obtains digital fingerprints and prepares a report ready to hand to local law enforcement.
The Giga Guardian will be open source and Raspberry Pi based so that any business may implement it on their own at cost if they have the technical understanding of how to do so, or sold as a mostly plug-and-play system, with easy GUI dashboards for custom configurations, all at a price small local businesses will be able to afford.
If you are interested in investing early, DM me.