ajhit406

A friend runs a local business that relies on it's hard telephone lines to take orders.

They have recently been getting ddos-ed with robocalls for 20-30min periods and received an email with a ransom notice asking for BTC payment or that the calls will escalate.

They tried blocking a few of the numbers, but obviously the attackers are rotating lines regularly.

They can't only accept calls from a whitelist of callers as many customers are new.

Can you think of other solutions / services that can help out?