SSL Pinning on Lynx Tech Bloghttps://blog.lynxflow.co/en/tags/ssl-pinning/Recent content in SSL Pinning on Lynx Tech BlogHugo -- gohugo.ioenThu, 13 Aug 2026 00:00:00 +0800The Gray Tech Chain Behind Cheap Food-Delivery Coupons: From Packet Capture to Bulk Claiminghttps://blog.lynxflow.co/en/posts/2026-08-13-coupon-hacking-tech-chain/Thu, 13 Aug 2026 00:00:00 +0800https://blog.lynxflow.co/en/posts/2026-08-13-coupon-hacking-tech-chain/<img src="https://blog.lynxflow.co/images/coupon-hacking-tech-chain.png" alt="Featured image of post The Gray Tech Chain Behind Cheap Food-Delivery Coupons: From Packet Capture to Bulk Claiming" />Search for &ldquo;Burger King,&rdquo; &ldquo;Pizza Hut,&rdquo; or &ldquo;McDonald&rsquo;s&rdquo; on Xianyu (China&rsquo;s biggest secondhand marketplace) and you&rsquo;ll find piles of meal deals well below official prices — a Burger King signature 8-piece combo coupon for ¥39.9, a Pizza Hut two-pizza coupon for ¥26.4. Sellers note &ldquo;confirm your phone number before ordering,&rdquo; &ldquo;14-day validity,&rdquo; &ldquo;instant delivery,&rdquo; and &ldquo;one order per purchase, repeatable.