PALO ALTO, Calif. — From a Silicon Valley office strewn with bean-bag chairs, a group of twenty-something software engineers is building an unlikely following of terrorist hunters at U.S. spy agencies. One of the latest entrants into the government spy-services marketplace, Palantir Technologies has designed what many intelligence analysts say is the most effective tool to date to investigate terrorist networks. The software’s main advance is a user-friendly search tool that can scan multiple data sources at once, something previous search tools couldn’t do. That means an analyst who is following a tip about a planned terror attack, for example, can more quickly and easily unearth connections among suspects, money transfers, phone calls and previous attacks around the globe. Palantir’s software has helped root out terrorist financing networks, revealed new trends in roadside bomb attacks, and uncovered details of Syrian suicide bombing networks in Iraq, according to current and former U.S. officials familiar with the events. More..