Why do campus cards suddenly have a lot of harassing calls from abroad?

The reason why the campus card suddenly has a lot of harassing calls from abroad may be that your information has been leaked. The leakage route may be phishing, telecom fraud or data leakage. Once the information is leaked, it may be used by criminals for harassing calls, sending spam messages, phishing emails and other purposes.

In order to prevent these harassing calls, some measures can be taken, such as not answering strange calls, blocking strange numbers, joining blacklists, etc. In addition, you can also use anti-harassment software or services to help you automatically block these calls and text messages. At the same time, it is recommended that you modify your password in time, close the leaked account and protect the safety of personal information.