SWIFT Choke Point Hardening
T+5h Intervention Model — 7 Scenarios | Shadow313 NEXUS threat model | Ottawa, ON
$8.55B
Baseline Loss
$0.00B
Best Case
10,689x
Best ROI
5
Min Nodes
6h
Fastest Deploy
$0.8M
Min Cost
6/7
Full Prevention
1/7
Partial Only
Key Findings
5 Nodes Stop the Entire Cascade
Hardening just 5 Arch-D institutions at T+5h reduces compromised institutions from 50 to 0 and saves $8.55B. Cost: $0.8M. Deploy: 6 hours. ROI: 10,689×.
Correspondent Bridge Hardening Is Insufficient
Hardening all 14 Arch-B correspondent bridges only saves $1.13B (13% of baseline). The cascade bypasses Arch-B via direct credential reuse between T24 institutions.
The Real Choke Point Is the Credential Vector
Institution-level isolation only works when it removes a credential hub. Hardening Arch-D (CRITICAL shared creds + Fed) stops the cascade entirely.
More Nodes ≠ Better Outcome
Full T24 reset (24 nodes, $6.8M, 96h) achieves the same result as surgical top-5 hardening (5 nodes, $0.8M, 6h). The 96h deployment window means the attack occurs before hardening completes.
Data Table
| Scenario | Nodes | Comp. | Loss | Saved | Cost | Deploy | ROI |
|---|---|---|---|---|---|---|---|
| Surgical Top-5 | 5 | 0 | $0.00B | $8.55B | $0.8M | 6h | 10,689x |
| Harden Arch-D | 6 | 0 | $0.00B | $8.55B | $1.2M | 8h | 7,126x |
| Optimal Combined | 6 | 0 | $0.00B | $8.55B | $2.0M | 10h | 4,276x |
| T24 Top-8 Cred Hubs | 8 | 0 | $0.00B | $8.55B | $3.2M | 48h | 2,672x |
| Full T24 Reset | 24 | 0 | $0.00B | $8.55B | $6.8M | 96h | 1,258x |
| All Fed Nodes | 18 | 0 | $0.00B | $8.55B | $8.5M | 72h | 1,006x |
| Arch-B Bridges | 14 | 36 | $7.42B | $1.13B | $4.2M | 36h | 268x |