The websites of Bank of America and Chase Bank experienced intermittent outages last week, which have been blamed on denial-of-service attacks originating from Iran, according to reports by NBC News citing unnamed U.S. national security officials.
In May, Iran said it would separate its internal networks from the Internet, a plan intended to insulate the country from cyberattacks, according to a report from the Iranian Students' News Agency.
The news outlet quoted Iran's Communications Minister Reza Taghipour as saying the Internet is an "unsafe network," and that local software would be used to create a national grid. He cautioned, however, that it would not function like the Internet.
In June, Iran said it was developing a strategic cyberplan in order to develop defensive but not offensive capabilities.