The e-mails, which have been sent since February 13, warned activists of their “illegal activities” and said they will be dealt with according to Iranian Islamic laws. The e-mails claim that a list has been created including names and e-mail addresses of individuals accused of working for the goals of “foreigners“ and “seditionists,” which are terms used by Iranian officials to refer to the members of the opposition Green Movement.
Iran appears to have stepped up its use of the Internet to pressure activists and scrutinize the activities of its citizens. In recent months, several activists have been reportedly warned and sentenced to prison over their postings on Facebook. In the past, the Iranian authorities have used text messages to warn people not to take to the streets.
Iran's cyber police unit said last month it had "destroyed" a Facebook page that organized an online beauty competition, and arrested its four administrators.
Last December, Iran’s Intelligence Minister Heydar Moslehi publicly admitted hacking into the e-mail of opposition members.