The Cowlitz County PUD is among more than a dozen utilities targeted in a recent cyberattack across the United States, according to an investigation by The Wall Street Journal published this week.

Cowlitz County PUD spokeswoman Alice Dietz confirmed Wednesday that the PUD’s firewall successfully blocked the only infected email that hackers sent.

“We’re proud of our IT department,” Dietz said. “They just continue to implement strong cybersecurity measures. This is a great example of why we take it so seriously.”