SAFE report is a paper note in Fallout 4. It details some success rates of the SAFE test.
Location
The report is found in Covenant, on the desk inside the office building. Also in the [Expert] wall/floor safe close to that same desk, behind a crate.
Transcript
SAFE v11.3 Report
28% failure rate, delta -1% (need more data samples)
Unnamed Travelers (2): 1 failure, logged
Slog Ghouls (5): 1 failure, definite false positive
Stockton Caravan (5): 2 failures, resolved (RR or Inst?)
Mr. Tims (1): 0 failures
Finch Farms (3): 0 failures, working long term deal
Boyd (1): 1 failure, logged
"Honest" Dan (1): 0 failures
Gallery
