{"data":{"id":"627b2151-662c-4217-a626-fe5af4623684","title":"Trigger Without Trace: Toward Stealthy Backdoor Attack on Text-to-Image Diffusion Models","summary":"Researchers have developed a new backdoor attack method called Trigger without Trace (TwT) that can secretly compromise text-to-image diffusion models (AI systems that generate images from text descriptions) while avoiding detection. The method works by using syntactic structures (grammar patterns) as hidden triggers and employing a mathematical technique called Kernel Maximum Mean Discrepancy (KMMD, a way to match statistical distributions) to make malicious samples look identical to legitimate ones, achieving a 97.5% success rate while bypassing three existing defense detection systems.","solution":"N/A -- no mitigation discussed in source.","labels":["security","research"],"sourceUrl":"http://ieeexplore.ieee.org/document/11527385","publishedAt":"2026-05-20T13:19:15.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"info","attackType":["model_poisoning"],"issueType":"research","affectedPackages":null,"affectedVendors":["Stability AI"],"affectedVendorsRaw":["text-to-image diffusion models","Stable Diffusion"],"classifierModel":"claude-haiku-4-5-20251001","classifierPromptVersion":"v3","cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":null,"epssScore":null,"patchAvailable":null,"disclosureDate":"2026-05-20T13:19:15.000Z","capecIds":null,"crossRefCount":0,"attackSophistication":"advanced","impactType":["integrity","safety"],"aiComponentTargeted":"model","llmSpecific":false,"classifierConfidence":0.92,"researchCategory":"peer_reviewed","atlasIds":null}}