Five recent explosions in Iran may have been caused by computer viruses similar to the Stuxnet virus that disabled Iranian centrifuges in 2010. Two of the blasts took place at power plants, one at a missile research, development and production site, one at a new uranium enrichment centrifuge center, and the last (if it can be considered part of the attacks) in downtown Tehran at a medical facility that could have been a cover for nuclear operations such as a hidden command center. Iran says that the Shiraz Power Plant facility was hit by a cyberattack, which poses the question: were the blasts caused by "the son of Stuxnet?" Stuxnet was a computer virus used to attack Iranian centrifuges at the Natanz nuclear facility in September 2010.