Baymard found 18% of users explicitly look for security indicators before entering credit card info, and 19% abandon carts due to trust concerns. Case studies show trust badges can increase conversion by up to 42% (Blue Fountain Media) and even 137% (Clean Energy Experts with Verisign).

Key insight: less is more. Sites displaying 6+ badges create skepticism. One case study increased conversion 62% by removing badges (from 11 to 6). Norton consistently ranks as most trusted. For established brands, badge impact is minimal (0-3%). Payment logos improve conversion 8-15%.

Without trust seals, 61% of shoppers won't complete their purchase. But excessive badge use creates skepticism—removing badges from 11 to 6 strategically placed ones increased conversion by 62%.