Critical networks in US, 15 other nations, completely owned, possibly by Iran
arstechnica.com
arstechnica.com
Google search for "operation cleaver" brings up mainly mainstream news, and few infosec websites besides Cylance's own website - this could be an indication that the report is mainly marketing and hype. Discussion over at Reddit does seem to agree that there's a large marketing component to it, although there's good technical analysis alongside:
http://www.reddit.com/r/netsec/comments/2o1kdu/operation_cle...