In May, President Donald Trump announced that the United States would withdraw from the 2015 nuclear agreement, negotiated by the Obama Administration, designed to keep Iran from developing or acquiring nuclear weapons. As part of that reversal, the Trump administration reimposed economic sanctions on Iran. From the start, the US actions stoked tensions and fear of Iranian retaliation in cyberspace. Now, some see signs that the pushback has arrived.

Get in-depth coverage of current and future trends in technology, and how they are shaping business, entertainment, communications, science, politics, and society.