Like, the phones happily connect to these fake towers because the signal is strongest from that one and there is no authentication to verify who the tower belongs to, nor encryption of SMSes?
I worked in a company that had a base station emulator in their testing lab in 2008. I can’t recall the cost but it was well over $10,000 and only worked with direct antenna coupling, it couldn’t broadcast.
Now we have software defined radios.
1. The Stingray eavesdrops, but avoids interfering with user traffic
2. The stingray is operated by law enforcement, not by fraudsters looking to steal your money