“二次放号”

Group 1 - The article discusses the concept of "second number release," where telecom operators reintroduce previously deactivated phone numbers into the market after a cooling-off period, allowing new users to acquire them [3] - The practice raises concerns as new owners of these numbers may face harassment from services linked to the previous owner, and there is a risk of personal information leakage if the previous owner's accounts are not properly unlinked [3]