In answer to your # 2 question, after they found the rocks, these brilliant counterspies went on to build THIS:
1) the artificial rocks pictured do not match the local background rocks very well. Surely the Israelis could do better.
2) So who found them, and how?
3) How was it determined that these were Israeli monitoring devices?
In short, the report is BS.
In answer to your # 2 question, after they found the rocks, these brilliant counterspies went on to build THIS: