At least as of a few years ago there was an active campaign to discourage the use of computers and especially the internet in haredi communities: http://www.independent.co.uk/news/world/middle-east/rabbis-r.... According to that article, the Vizhnitzer Hasidim even threatened to expel any children whose homes had an internet connection at all from attending the community's schools. And there were some high profile stunts where rabbis smashed smartphones and similar.
But now it does seem that they're moving towards being okay with computers as long as they don't include unrestricted internet access: http://forward.com/articles/184099/kosher-smart-phone-arrive...
There are also a good number of Orthodox Jews in the U.S. who aren't Haredi at all, mostly under the "Modern Orthodox" label, a position that embraces Orthodox Judaism theologically but doesn't follow the Haredi cultural rejection of modern society, e.g. modern clothing, the science & philosophy of the Enlightenment, etc. One key part of Haredi culture is not only Orthodox Judaism, but a wholesale rejection of the Jewish Enlightenment and modernity, which they hope to insulate their community from by building a parallel society separate from what they see as modern degenerate society. That tends to lead to suspicion of new technologies, especially new forms of communication that might short out the insulator.