The reason I ask is because most of the people who have been getting arrested seem to be people of Iranian descent who chose to move to another country. Recently a former U.S. Soldier of Iranian descent was also sentenced to die; all he did was return home to visit his grandmother.
Or are those just the ones you hear about? The article suggests there have been 53 executions this year in Iran. That's 2.5 executions per day.
But Iranian regime put pressure on families of people which they are active against Iran, in foreign countries to force them to go back to Iran , then they can arrest them and torture them and some times that you may have seen in the news Kill them.
I think the same has happened to this developer.
I remember there was a time which most of my friends were arrested , just because they were really active on the web (on any subject even computing and network not just political activity)
And those other 3 guys arrested a year ago were just "hiking". Because that's what people from 10,000 miles away normally do for fun: hike in the Iran-Iraq borders.
TL;DR: don't believe everything you read in the papers/net, Iranian or otherwise.