Stalkerware sees all, and US laws haven't stopped its spread

"Law professor Danielle Citron of Boston University, who has studied stalkerware, applauded the settlement, which she said sets a mold that similar apps must fit to comply with the law. But she found one part of the agreement weak: Retina-X agreed to get a written statement from purchasers that they wouldn't use the app for illegal purposes. 

Instead, Retina-X should have been required to say, "We won't sell a product that's hidden," Citron said. (Retina-X shut down in 2018 after being repeatedly targeted by hackers.)"