US cyber attacks against Iranian targets have not been successful, Iran's telecoms minister says, days after reports the Pentagon launched a long-planned cyber attack to disable the country's rocket launch systems.
Tension has run high between longtime foes Iran and the US since President Donald Trump on Friday said he called off a military strike to retaliate for the Middle East nation's downing of an unmanned US drone.
On Thursday, the Pentagon reportedly launched a long-planned cyber attack which disabled Iranian rocket launch systems.
"They try hard, but have not carried out a successful attack," Mohammad Javad Azari Jahromi, Iran's minister for information and communications technology, said on social network Twitter on Sunday.
"Media asked if the claimed cyber attacks against Iran are true ... last year we neutralised 33 million attacks with the (national) firewall."
Azari Jahromi called attacks on Iranian computer networks "cyber-terrorism", referring to Stuxnet, the first publicly known example of a virus used to attack industrial machinery, which targeted Iran's nuclear facilities in 2007.
Washington accused Tehran of also stepping up cyber attacks.
Officials have detected a rise in "malicious cyber activity" directed at the US by people tied to the Iranian government, Chris Krebs, director of the Department of Homeland Security's cybersecurity agency, said on Saturday.
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