Hey @tjalexander70,
Regarding your questions about whether you should be concerned: it’s not something we can speak to with absolute certainty. I don’t see any security threats for your site though, and I’ve kicked off a new scan for good measure.
Also note that just because these pings are happening to items in the Jetpack folder, that doesn’t necessarily mean that this is related to Jetpack, specifically.
Note that you can activate Jetpack’s Protect feature, to protect your site against brute force attacks.
As an aside, since you have a paid plan with us, you would get faster responses (and possibly, if applicable, more detailed responses) by reaching out to us from the contact form here:
https://jetpackme.wordpress.com/contact-support/
Just make sure you’re logged into your WordPress.com account so the ticket gets routed to the correct place in our queues. If you do choose to reach out that way, please link to this thread and include your logs.