Iran has been both victim and predator of several cyberwarfare operations. They clearly have the experience and they are spending a lot of resources for a long time.

A quick search about their operations:

- Shamoon malware was categorized as cyberwarfare and it was used against Saudi Aramco, allegedly by Iran.

https://en.wikipedia.org/wiki/Shamoon

- A blackout in Turkey was also linked to Iran

https://observer.com/2015/04/iran-flexes-its-power-by-transp...

- Iran is also (allegedly) active in Information Warfare, which is much more complicated than technical cyber attacks.

https://www.cnbc.com/2021/03/16/russia-and-iran-tried-to-int...

- Israel and Iran are actively attacking each others infrastructure for a while.

https://foreignpolicy.com/2020/06/05/israel-and-iran-just-sh...

- Operation Newscaster. Cyber espionage and social engineering targeted senior U.S. military and diplomatic personnel, congresspeople, journalists, lobbyists, think tankers and defense contractors.

https://en.wikipedia.org/wiki/Operation_Newscaster

- Operation Cleaver. targeted the military, oil and gas, energy and utilities, transportation, airlines, airports, hospitals and aerospace industries organizations worldwide.

https://en.wikipedia.org/wiki/Operation_Cleaver