Can Coupon Codes Be Hacked?
A hacker can brute force the coupon code field value by trying all combinations of alphanumeric values of a certain length (usually 4 to 10 characters). Easier said than done, this technique is possible but strongly depends on the hacker's available processing power.
If most websites offer a code for 10% off, a 75% off offer is likely a scam. Be wary of all high value offers. A promo for a $500 gift card is nearly always fake. Look for legal language and expiration dates.
Coupon Scams Promise Savings but Deliver Spam
Can coupons be tracked?
Smartphones Get Smart Coupons Coupons printed from the Internet or received and redeemed via smartphones not only track redemption, but a lot more. Bar codes for these coupons may be loaded with data about the customer, to include personal information, Facebook page data and the Internet search terms used to find it.
How Do Companies Track Which Coupons Were Redeemed?
Can you trust coupon code sites?
Use a trusted source. The better path is to check websites such as RetailMeNot, DealsPlus, Coupon Cabin and Slickdeals. These sites work with thousands of retailers and brands, as well as user submissions, to aggregate sales and codes. At RetailMeNot, all codes are tested and verified before being published.
Nine tricks for getting the most out of online coupon codes