A vulnerability in the Snapchat app opens the iPhone up to denial-of-service attacks that can cause the device to freeze and crash, according to cyber security researcher Jamie Sanchez [Google Translation] (via The Los Angeles Times).
A weakness in the app’s system can allow a hacker to send thousands of messages to a Snapchat user in seconds, which can cause a crash that requires a hard reset to fix. Tokens generated by the app used to verify user identity can be reused by hackers to send a flood of messages.
Full article: http://www.macrumors...-vulnerability/
Yet another reason not to use that POS app.