"The media ask whether the alleged cyberattacks against Iran did take place," Azari Jahromi said in a tweet on Monday.
"They try hard, but they have yet to carry out a successful attack," Jahromi added, Press TV reported.
On Thursday American outlets claimed that the United States had targeted computer systems that control Iranian rocket and missile launchers.
The attacks came shortly after the Islamic Revolution Guards Corps (IRGC) shot down a US Navy RQ-4A global Hawk drone that had entered Iranian airspace in the Persian Gulf region to gather intelligence, using Khordad 3 indigenous surface-to-air missile system.
"We have been facing cyber-terrorism for a long time...Last year we neutralized 33 million attacks with the (national) firewall," Jahromi noted.
Citing unnamed current and former US government officials, the New York Times said in a report on Sunday that the plans pushed by the White House are designed to develop new options, including in cyberspace, to counter the Islamic Republic without escalating tensions into a full-out conventional war.
According to the officials, the White House has told military and intelligence officials it now also wants options in line with the kind of operations conducted by Iran’s Islamic Revolutionary Guards Corps (IRGC), including the downing of the intruding US spy drone.
They did not provide further details about the secret operations under consideration by the White House, the report said.
The Times, however, said they could include a wide range of activities such as additional cyberattacks, secret operations aimed at disabling speedboats used by the IRGC and covert operations inside Iran aimed at fomenting more unrest,
The IRGC Navy is well-known for the speedboats it operates in the Persian Gulf, which it has used to successfully contain foreign ships and aircraft carriers around the key Strait of Hormuz in the past.