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Iranian and Pro-Regime Cyberattacks Against Americans (2011-Present)

Posted on July 5, 2025 by Dissent

Annie Fixler writes:

Since 2011, the Islamic Republic of Iran and pro-regime hackers have increasingly utilized digital technology to threaten U.S. national security, conducting dozens of cyber operations against Americans. Recently, on June 30, the U.S. government issued an advisory warning that Iran may launch additional cyberattacks against U.S. critical infrastructure and the defense industrial base. This publication identifies dozens of cyberattacks that Tehran and Tehran-aligned hackers have perpetrated against the United States. While the list is not comprehensive, it demonstrates that Iranian state entities and pro-regime hackers present a continuing cyber threat to U.S. persons, companies, and infrastructure.

Late 2011-Mid-2013: Iranian hackers working on behalf of the Islamic Revolutionary Guard Corps (IRGC) launch distributed denial of service attacks against 46 U.S. banks, disrupting online banking systems and costing millions in damages. The U.S. Department of Justice (DOJ) indicts seven hackers and two Iranian computer companies in March 2016 for conducting the operation.

May 2013: The Department of Homeland Security (DHS) reports that multiple U.S. adversaries, including Iran, are probing the U.S. electrical grid for vulnerabilities.

September 2013: The U.S. Navy blames Iran for hacking its intranet systems in San Diego. The cybersecurity firm Cylance assesses that this attack is part of a two-year Iranian espionage and sabotage operation against multiple U.S. and foreign targets.

Read more at Foundation for Defense of Democracies

Category: cyberwar

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