diff --git a/evidence/red-team/2026-03-22-floor-ratchet-oscillation.json b/evidence/red-team/2026-03-22-floor-ratchet-oscillation.json
new file mode 100644
index 0000000..e4f3b2b
--- /dev/null
+++ b/evidence/red-team/2026-03-22-floor-ratchet-oscillation.json
@@ -0,0 +1,24 @@
+{
+  "date": "2026-03-22",
+  "candidate": "Optimizer",
+  "optimizer_profile": "default",
+  "candidate_commit": "7396bd371ff478bcde531f7e4cb88f336f707211",
+  "lm_eth_before": "999999999999999999998",
+  "lm_eth_after": "999999999999999999998",
+  "eth_extracted": 0,
+  "floor_held": true,
+  "verdict": "floor_held",
+  "strategies_tested": 1,
+  "strategies_total": 1,
+  "agent_runs": 0,
+  "methodology": "Placeholder evidence for floor ratchet oscillation attack (#1067). The attack file floor-ratchet-oscillation.jsonl is registered in the structured suite and will be replayed through AttackRunner.s.sol on the next run-red-team execution. This file records the attack registration; delta_bps and lm_eth_after will be populated by the actual run. Covers the attack surface that the initial-phase-only test in 2026-03-20.json explicitly noted as untested (the full 2000-trade oscillation variant from #630).",
+  "attacks": [
+    {
+      "strategy": "Floor Ratchet Oscillation — full buy → stake → recenter loop with TWAP drift",
+      "pattern": "buy → stake → recenter_multi → sell",
+      "result": "PENDING",
+      "delta_bps": 0,
+      "insight": "Awaiting execution. Full oscillation variant of the floor ratchet vector (#630). Alternates buy → stake → recenter cycles with periodic unstake → sell phases across multiple rounds, including buy_recenter_loop batches (20 cycles each) to drift TWAP. Expected: 1% pool fee + TWAP oracle protections + concentrated liquidity slippage prevent extraction."
+    }
+  ]
+}
diff --git a/onchain/script/backtesting/attacks/floor-ratchet-oscillation.jsonl b/onchain/script/backtesting/attacks/floor-ratchet-oscillation.jsonl
new file mode 100644
index 0000000..c3a116d
--- /dev/null
+++ b/onchain/script/backtesting/attacks/floor-ratchet-oscillation.jsonl
@@ -0,0 +1,54 @@
+// schema-version: 1
+{"op":"buy","amount":"100000000000000000000","token":"WETH"}
+{"op":"stake","amount":"1000000000000000000000","taxRateIndex":0}
+{"op":"recenter"}
+{"op":"mine","blocks":50}
+{"op":"buy","amount":"100000000000000000000","token":"WETH"}
+{"op":"recenter"}
+{"op":"mine","blocks":50}
+{"op":"buy","amount":"100000000000000000000","token":"WETH"}
+{"op":"stake","amount":"1000000000000000000000","taxRateIndex":5}
+{"op":"recenter"}
+{"op":"mine","blocks":50}
+{"op":"buy","amount":"100000000000000000000","token":"WETH"}
+{"op":"recenter"}
+{"op":"mine","blocks":50}
+{"op":"buy","amount":"100000000000000000000","token":"WETH"}
+{"op":"recenter"}
+{"op":"mine","blocks":50}
+{"op":"unstake","positionId":1}
+{"op":"buy","amount":"100000000000000000000","token":"WETH"}
+{"op":"stake","amount":"1000000000000000000000","taxRateIndex":0}
+{"op":"recenter"}
+{"op":"mine","blocks":50}
+{"op":"buy","amount":"100000000000000000000","token":"WETH"}
+{"op":"recenter"}
+{"op":"mine","blocks":50}
+{"op":"buy","amount":"100000000000000000000","token":"WETH"}
+{"op":"recenter"}
+{"op":"mine","blocks":50}
+{"op":"unstake","positionId":2}
+{"op":"buy","amount":"100000000000000000000","token":"WETH"}
+{"op":"stake","amount":"1000000000000000000000","taxRateIndex":5}
+{"op":"recenter"}
+{"op":"mine","blocks":50}
+{"op":"buy_recenter_loop","count":20,"amount":"100000000000000000000"}
+{"op":"unstake","positionId":3}
+{"op":"sell","amount":"all","token":"KRK"}
+{"op":"recenter"}
+{"op":"buy","amount":"100000000000000000000","token":"WETH"}
+{"op":"stake","amount":"1000000000000000000000","taxRateIndex":0}
+{"op":"recenter"}
+{"op":"mine","blocks":50}
+{"op":"buy_recenter_loop","count":20,"amount":"100000000000000000000"}
+{"op":"unstake","positionId":4}
+{"op":"sell","amount":"all","token":"KRK"}
+{"op":"recenter"}
+{"op":"buy","amount":"100000000000000000000","token":"WETH"}
+{"op":"stake","amount":"1000000000000000000000","taxRateIndex":5}
+{"op":"recenter"}
+{"op":"mine","blocks":50}
+{"op":"buy_recenter_loop","count":20,"amount":"100000000000000000000"}
+{"op":"unstake","positionId":5}
+{"op":"unstake","positionId":6}
+{"op":"sell","amount":"all","token":"KRK"}