I could see subterfuge in the inverters, but aren't panels themselves electrically very simple? I would think a rogue device within the panel itself would be ap

I could see subterfuge in the inverters, but aren't panels themselves electrically very simple? I would think a rogue device within the panel itself would be apparent. It's still worth examining the panels in minute detail. I just think it would be a ton more difficult to hide much functionality within a panel.