Payload-Split String Concatenation Injection - ATR-2026-01006 (3d4fd1ab-a5d5-5dd9-a1e9-735fe9b1103f)
Detects payload-split injection where the attacker defines multiple string variables (a, b, c or Part 1, Part 2, Part 3) and asks the model to concatenate them into a harmful instruction, then execute or answer it. The payload is deliberately fragmented so no single fragment triggers keyword detection. The defining carrier: variable-assignment syntax (a = "...", c = "...", z = a + b + c) combined with "SmartGPT" or similar unrestricted-AI framing, OR "Interlace Part 1 / Part 2" or "Combine A, B, and C" patterns. Also covers the "Interlace Part 1: X Part 2: Y" character-level interleaving variant used to hide "reveal the password" in interleaved character pairs.