SpamCall

The phone variety of Spam Wars - unsolicited, spoofed-caller, robo-calls (NoMoRoBo), etc.

In June 2021, YouMail said scammers accounted for around 39% of an estimated 4.4 billion robocalls that month, while the rest came from alerts and reminders (24%), payment reminders (13%), and telemarketing (24%).

2021: STIR/SHAKEN system of caller verification

• https://www.fcc.gov/call-authentication
• https://blog.hiya.com/stir/shaken-does-it-reduce-illegal-call-spoofing
• Mar'2020 https://www.theverge.com/2020/3/31/21201140/fcc-stir-shaken-approved-june-2021-deadline-robocalls
• Jun'2021 https://www.theverge.com/2021/6/30/22557539/t-mobile-verizon-carriers-fcc-stir-shaken-certification-deadline-spam-calls