The Yahya Ayyash Brigades came out in the open Friday claiming the rocket attack on the Sycamore Ranch shortly after the late Ariel Sharon’s funeral there last month and the Grad missiles fired last week at Netivot and Ashkelon. The group was founded by former Hamas military arm activists who dedicated their group to the Hamas master terrorist know as “Engineer.” He orchestrated terrorist attacks that claimed 100 Israel lives in the 90s before he was killed by Israeli clandestine agents in 1996. DEBKAfile: The Yahya Ayyash Brigades quit the Hamas military arm recently to embrace Salafist terrorist practices.