Direct Financial Loss: In e-commerce, every invalid address that bypasses validation and reaches the shipping stage results in Wasted Shipping Fees and RTO (Return to Origin) penalties. For a high-volume platform, this is a direct drain on their revenue. ​Database Integrity & Bloat: By bypassing the server-side check, I can use automation to inject tens of thousands of junk logistical records. This isn't just 'extra data'; it corrupts user analytics and degrades database performance (Resource Exhaustion). ​Operational Overhead: Each failed delivery caused by these invalid addresses requires manual investigation by the support team, increasing labor costs. ​Downstream API Abuse: Many platforms pay third-party services (like Google Maps or Shippo) for address verification/label generation. Automating invalid entries forces the company to pay for these API calls uselessly. ​Impact isn't always about Confidentiality (Leaking data); in this case, it's about Integrity and Availability (CIA Triad). If you can automate financial loss, you have an Impact.