Hackers ‘could target electricity grid’ via solar panel tech

Energy researcher Iain Staffell, at Imperial College London, told that, "It's certainly a risk to electricity supply and could stress grid operations."

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Hackers ‘could target electricity grid’ via solar panel tech

Hackers could target electricity grids through security flaws in solar panel equipment, a Dutch researcher has said.

Willem Westerhof found 17 vulnerabilities in inverters, which convert electricity produced by the panels so it can be used on the grid.

He said internet-connected inverters could be targeted by hackers.

One manufacturer said that only “a small fraction” of its devices were affected.

After discovering vulnerabilities in devices produced by a range of manufacturers, Mr Westerhof carried out a field test near Amsterdam on two inverters made by SMA.

He told the BBC the test showed it would be possible for an attacker to remotely control the devices and alter the flow of power.

Because energy equipment on the grid needs to balance supply with demand, overloading the system could result in a power cut.

“If an attacker does that on a large scale, that has serious consequences for the power grid stability,” said Mr Westerhof.

Energy researcher Iain Staffell, at Imperial College London, told that, “It’s certainly a risk to electricity supply and could stress grid operations.”

However, he did not believe it could cause blackouts and he pointed out that a large number of inverters would have to be attacked at once for any significant effect to occur.

SMA responded by pointing out the limitations to such an attack:

  • only four of its models are affected by the vulnerabilities
  • users are advised to change default passwords when installing the devices, though this is not required
  • inverters not connected to the internet are safe

“The security of our devices has highest priority for SMA in all respects,” the company said in a statement.

“We already assessed the mentioned issues on a technical basis and [are working] intensively on the correction.”

It added that it would publish further responses to Mr Westerhof’s research in the coming days and that it was working on a report about the security of its products with the Dutch National Cyber Security Centre.

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