A previously unheard of website, so maybe some caution. Their explanation for the data presented:
Vocativ has discovered, collated and tabulated the available data from monthly reports posted in various online forums affiliated with ISIS. The reports detail every ISIS attack in chronological order (see embed below). The ISIS reports were published by what the organization calls its “media ministry.” These reports were provided only in Arabic, which suggests ISIS wasn’t targeting them for Western exposure, but rather to spread news of its achievements throughout the Arabic-speaking world to would-be recruits and supporters. It should also be noted that, as ISIS generated the reports, not all details can be corroborated. Regardless, the organization’s data provides a detailed picture of how ISIS views itself and what its shifting priorities are in the battlefield.
Link:http://www.vocativ.com/world/iraq-wo...ge=all#!bHpDun