SignalFuse was co-founded by CEO Karthik Rau (former product and marketing executive at VMware) and CTO Phillip Liu (former software architect at Facebook).
The company’s web site confirms the funding.
In the “stealth-mode” home page they say:
“We are a stealth-mode company led by former Facebook and VMware executives that has raised $8M in venture financing from Andreessen Horowitz. We are hiring world-class engineers who want to work on hard problems with smart peers and build software that will be used by millions of people. If you are passionate about distributed systems, data science and statistics, or simple and elegant user interfaces, we’d love to hear from you. We are based in downtown San Mateo, 2 blocks away from the Caltrain station”.