I am not sure if this is the place to put this. I work from home and was speaking on my windows 10 work computer with a co-worker who built a house and told him about Home Assistant. We were speaking on Teams and so I started sharing my screen. I called up my instance through homeassistant.local:8123 did not resolve so I typed in the internal IP address. In any case around that time I got a notice that my work computer got some malware. The virus is called: PUA:MacOS/Bundlore.Sd!MTB. Is it possible looking at HA through the internal IP put this malware on my work computer?
That would depend, is your home network infected with malware?
If not, then no it is not possible.