Infrastructure giant Itron says it has been hacked

US energy technology company Itron has confirmed that it was subjected to a cyberattack in mid-April and that hackers gained access to some of its systems.

In a legally required filing with the U.S. Securities and Exchange Commission late Friday, Itron said it had been “notified” of a hacker in its systems. The company did not say who informed it, but added that it subsequently expelled the hackers and saw no signs of further intrusions into its internal systems.

Itron did not specify what type of cyberattack it suffered, such as whether ransomware was deployed or whether hackers contacted the company directly. It is also not immediately clear what impact, if any, the cyberattack will have on the company’s systems.

The company said it had not identified any unauthorized activity in the “customer-hosted portion of its systems,” suggesting the breach may be limited to its IT network.

Itron said it also reported the violation to law enforcement.

The Liberty Lake, Washington-based company provides technology to manage energy consumption for power grids, including water, gas and electricity supplies. The company provides Internet-connected utility meters to more than 110 million homes and businesses, according to its website. Itron has thousands of customers, including cities and municipalities, as well as operations in more than 100 countries, its website reads.

Itron said it had activated emergency and data backup plans, and operations were continuing in all material respects, but warned it may have to file legal filings and subsequent regulatory notifications. This indicates that the company may have experienced a data breach, which could result in further legal notifications under state data breach notification laws.

It’s not clear who, if anyone, at Itron is responsible for cybersecurity. An Itron spokesperson did not immediately respond to TechCrunch’s request for comment.