The vulnerability list is divided into two groups:

The first category, one-handed vulnerability single group, is generally a user group, and the group owner is a technical cow. Through various technical means, these welfare bills and coupons were captured at the first time.

The second kind, second-hand group, also known as porter-type collection group, is generally the group you can find in the market.

Because the single time of some vulnerabilities is very short, maybe only a few minutes, second-hand groups generally only choose some single synchronization.

First, Tmall Supermarket;

Second, it is cost-effective to collect and purchase;

Third, various Taobao and Tmall activities, such as 6 18, Shuang 1 1 and Shuang 12, have the highest frequency and the largest number. Tmall also has several activities every month.

Taobao has a Bug list and the price is very favorable. This kind of loophole cannot be drilled by ordinary people, and it is only 1-2 times a year. It's all loopholes. After you join the group, only the robot will always give you coupons and give them back to the group owner after placing an order. To be honest, watching this mass news every day is also a burden.