The smart toothbrush botnet story, as others have also pointed out, is almost certainly not real. If it is real, Fortinet needs to say something / provide some sort of evidence ASAP

https://www.404media.co/the-viral-toothbrush-ddos-botnet-story-almost-certainly-isnt-real/

The Viral Smart Toothbrush Botnet Story Is Not Real

"FortiGuard Labs has not observed Mirai or other IoT botnets target toothbrushes or similar embedded devices."

404 Media

Confirmed this 100% isn't real, was a hypothetical scenario:

https://www.404media.co/the-viral-toothbrush-ddos-botnet-story-almost-certainly-isnt-real/

The Viral Smart Toothbrush Botnet Story Is Not Real

"FortiGuard Labs has not observed Mirai or other IoT botnets target toothbrushes or similar embedded devices."

404 Media
@jasonkoebler “toothbrush botnet” is still my favorite phrase of the week!