-No. Sigfox devices do not have an IP address. They are not connected to the Internet. They cannot be used as a vector of attack of a global system. What happened with baby monitors (massive DDoS attack on Dynn servers) could not, by nature, happen through Sigfox devices. -Sigfox devices can send 12 bytes at a time and receive up to 32 bytes a day >> downloading malware on Sigfox devices becomes impossible.