[RE-wrenches] EG4 CISA Advisory

[Howie Michaelson]

Thanks for the reference Jason.  I only have 2 EG4 18k systems in the wild,
one of which I've been promised a hardware upgrade for over a year now (to
fix inverter shut offs due to relatively small imbalanced loads).

Not being up on cyber security, I only vaguely understand what is being
warned. As best as I can make out, the recommendation is to put the system
behind a robust firewall and only access it via an up-to-date VPN and only
with continual monitoring or remove it from internet connectivity
altogether.

If anyone can put the warning into a format that those of us without cyber
training can understand, it would be very much appreciated.

Thanks,
Howie

On Sat, Aug 9, 2025, 2:30 PM Jason Szumlanski via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> In case you have not seen it:
>
> https://www.cisa.gov/news-events/ics-advisories/icsa-25-219-07
>
>
> Jason Szumlanski
> Principal Solar Designer | Florida Solar Design Group
> NABCEP Certified Solar Professional (PVIP)
> Florida State Certified Solar Contractor CVC56956
> Florida Certified Electrical Contractor EC13013208
>
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