Planes require lots of maintenance not sure why everyone is saying Boeing is the cause of this one. How old is the modified aircraft? If it’s a few months off the assembly line and it’s having maintenance issue that is grounding the aircraft then yea give Boeing some shit but airlines/operators have to take planes out of service all the time for maintenance, shoot even the military does it.
I worked in Aerospace for a few years and the company I worked for did a lot of work for Boeing, mostly on the Apache program, Boeing definitely has its issues but maintenance issues are not a Boeing only issue.
If they are making it past your firewall and hitting your computer then the firewall is open and it shouldn’t be. Or that’s an outbound connection triggering the alert.