Ryan loved tweaking photos on his Android phone.
He’d heard rave reviews from his friends with iPhones about Prisma, a new iOS app for image editing. So when he heard Prisma would soon be released for Android, he logged in to the Google Play Store to see if it was there yet.
To his surprise, he found one that looked just like what his friends were describing. Delighted, he downloaded and started using it. Meanwhile, the app—a fake—was busy installing a Trojan horse on his phone.