Theft From Online Shopping Carts - Past and Present

**TrustedSec shopping cart abuse techniques:** This report reviews past and present weaknesses in online shopping carts—simple price tampering, negative/partial quantities, add-on manipulation, coupon brute-force, race conditions, and gift card PIN brute-force—illustrating how attackers and penetration testers can manipulate orders or steal funds/gift-credit and describing real-world test outcomes and operational risks to merchants.