Brookhaven National Laboratory was reportedly the victim of an attempted cyberattack from Russian hackers over the summer.

The group known as Cold River created phony login pages hoping nuclear scientists would enter their usernames and passwords, according to Reuters.

Adam Schwam, a cybersecurity expert with Sandwire Technology Group, says one wrong click could be enough to let hackers in.

"The sophistication is pretty intense," Schwam said. "Once they get their username and password then they can log in to the users email and then they can send it emails from them, send it out to others to grab information."

The attempted hack comes just as Suffolk County is dealing with its own cyberattack that it is still dealing with.

Former Rep. Tom Suozzi says the United States needs to be cautious of Russia and the Chinese Communist party.

"They're no longer constricted by social norms or international norms," Suozzi said. "They feel they can do whatever they want with impunity. And so we have to be more vigilant."

A spokesperson for the U.S. Department of Energy, Jeremy Ortiz, told News 12, "As part of our ongoing review, Department of Energy has not found evidence of information being compromised."

News 12 reached out to the lab for comment but have not heard back as of 10 p.m. Monday.

Experts say people should be suspicious of every email they get and if they are not sure about a link, don't click it.