MIT Technology Review
Criminal telephone spammers can get through because it's become so easy to evade U.S. law enforcement.
If you’ve been getting a lot of robocalls lately, it’s because the Do-Not-Call list doesn’t work anymore
Illegal robocalls that try to scam you out of money are flourishing. Can the…
朝日新聞（The Asahi Shimbun）
The Wall Street Journal
Robocalls—those pre-recorded, unwanted phone calls—are at a record high. How you can fight back against them, and why it matters:
How to Stop the Robocall Uprising
As intrusive pre-recorded calls to your home phone and smartphone reach record highs, Joanna Stern looks at how you can try to fight back with services like Nomorobo and Hiya.
https://en.wikipedia.org/wiki/Social_networking_serviceA social networking service is a platform to build social networks or social relations among people who share similar personal and career interests, activities, ...
America is losing the battle against robocalls. 3.4bn were blasted out in April alone