Iran's electronic networks have been attacked in the last few days, media reports say Israel is behind it, while the country's officials have been silent so far.
Israeli media linked the electronic attack to the disclosure of the Mossad's role in alerting the Danish authorities to an Iranian plot to launch an attack in Copenhagen.
The virus that attacked Iran's networks was "more violent, more advanced and more sophisticated" than the Staxnet virus, which hit devices linked to Iran's nuclear program network in 2010, the Times or Israel reported.
Israeli officials refused to discuss the issue, and whether it had already been signed by Israeli sources. The newspaper, quoting an Israeli television report, described the government silence as "suspicious."
The development comes days after the head of the Iranian civil defense, Gholamreza Jalali, said that Tehran deflected a new version of Staxnet.
"We recently discovered a new generation of Staxnet that was made up of several parts and was trying to get into our systems," Jalali said last Sunday.
The report comes two days after Iran admitted that President Hassan Rowhani's mobile phone had been eavesdropped.
In September 2010, Iranian officials said the virus "Staxnet" infected computers belonging to Bushehr nuclear plant employees, but did not affect the main systems there.
The Staxnet virus exploits security holes in the Windows operating system and Siemens' industrial control system. Information security experts suspected it was an American or Israeli attack on Iran's nuclear program.
