I often receive short messages from Bosera Fund.

This is probably because Alipay account has been fished, and your Alipay account may have been fraudulently used. This situation is usually that some phishing websites will collect information such as Alipay account number and bank account number, and then make fraudulent payments in the name of Bosera Fund. I suggest you modify your Alipay account password and bank login password to avoid being fished again.