From Krebs on Security:
As scary as this attack sounds, there are several mitigating factors at work here. First off, this is not an attack that can be pulled off remotely: An attacker would have to be within range of the wireless signal between your device and a nearby wireless access point. More importantly, most sensitive communications that might be intercepted these days, such as interactions with your financial institution or browsing email, are likely already protected end-to-end with Secure Sockets Layer (SSL) encryption
KRACK is a potentially serious security issue. However most dental offices with newer routers and up to date malware protection have little to worry about. Nevertheless if you wan o be sure have your IT pro check it out.
HT Advanced Automation