Zwecks Auffindbarkeit ein paar Hastags dazu:
Untersuchte Hersteller: #Huawei #Sungrow #GinlongSolis #Goodwatt #GoodWe #SMA
Allgemein: #PV #WR #Wechselrichter #Solar #Inverter #SunDown #Forescout #China #Hacker #SmartHome #IoT
https://www.forescout.com/research-labs/sun-down-a-dark-side-to-solar-energy-grids/
@bsi

Recommendations
Manufacturers
Development • Devices: holistic security architecture including secure boot, binary hardening, anti-exploitation features, permission separation etc
• Applications: proper authorization checks on web applications, mobile applications and cloud backends
Testing • Regular penetration testing on applications and devices • Consider bug bounty programs
Monitoring Web Application Firewalls Remember that a WAF does not protect against logical flaws

Users
Residential and commercial users • Change default passwords and credentials • Use role-based access control • Configure the recording of events in a log • Update software regularly • Backup system information • Disable unused features • Protect communication connections
Commercial and utility installations (in addition) •
Include security requirements into procurement considerations
• Conduct a risk assessment when setting up devices • Ensure network visibility into solar power systems • Segment these devices into their own sub-networks • Monitor those network segments