Apple has started sending app purchase notification emails to iTunes Store users in an effort to curb app purchase fraud. According to Mac Rumors, an email is sent when a user’s Apple ID is used to make a purchase on the App Store from a new device. One such email—reprinted in the report—states, “Your Apple ID [redacted] was just used to purchase [a specific app] from the App Store on a computer or device that had not previously been associated with that Apple ID. If you made this purchase, you can disregard this email. This email was sent as a safeguard designed to protect you against unauthorized purchases. If you did not make this purchase, we recommend that you go to iforgot.apple.com to change your password.” The report notes that Apple already requires credit card users to reenter the three or four digit CID number from their credit cards to authenticate new devices, but no similar authentication system is in place for users with gift card balances.