United Against Nuclear Iran (UANI), an advocacy group has said it was the target of Iranian hackers, calling on the US impose sanctions on those responsible.

In a statement on Tuesday, UANI, based in the United States, said it suspected that APT35, also known as Charming Kitten, a well-known Iranian hacking group launched a series of cyberattacks, “Specifically targeting its leadership and members of its Advisory Board.”

UANI CEO Ambassador Mark D. Wallace was quoted as saying, “Those responsible managed to procure data outside of the public realm, impersonated our leadership in communications with former senior officials of the US government, and attempted to harvest Gmail credentials.”

He added that UANI took immediate action upon discovering these attacks “and has notified the relevant law enforcement authorities to request a criminal investigation.”

The group urged the authorities to investigate the incidents and for the US “to enhance its cyber security cooperation with its friends and allies. UANI further urges the Biden Administration to impose fresh economic sanctions against those responsible.”

UANI added that such attacks will not deter it “from achieving its goal of ensuring the regime fails in its pursuit of nuclear weapons, ends its support for terrorism, and stops its oppression of the Iranian people.”