Enlarge / An effective wiper of sorts. (credit: Getty Images) With tensions between the US and Iran on the rise following the downing of a US military drone last week, the director of the Department of Homeland Security's Cybersecurity and Infrastructure Security Agency is warning that Iran is elevating its efforts to do damage to US interests through destructive malware attacks on industrial and government networks. In a statement issued on Saturday, June 22, CISA Director Christopher C.