If the hacker has your phone number, he could use the Sakari sms marketing service to to secretly reroute you text messages, and from there they can use SMS codes to take over apps that use SMS verification like whatsapp.
View: https://twitter.com/motherboard/status/1371512348838653958?s=20
View: https://twitter.com/motherboard/status/1371512793913036807?s=20
View: https://twitter.com/motherboard/status/1371512348838653958?s=20
View: https://twitter.com/motherboard/status/1371512793913036807?s=20
