Research
Prompt injection doesn't care what your agent does for a living
Publication date unknown · Discovered lambda.ai
Page published
Publication date unknown · First observed: 29 Oct 2026
Coverage timeline
Single-source research — one report is available.
Why it matters
AgentBeats Security Arena's findings suggest defenders should test transferable prompt-injection strategies across workflows rather than treat domain-by-domain scenario coverage as sufficient assurance.
Lambda reports that clustering 1,433 winning prompt-injection attacks from its AgentBeats Security Arena competition revealed recurring attack patterns across application domains. Conducted with UC Berkeley's RDI, the competition tested attacker and defender agents running gpt-oss-20b across 21 held-out scenarios, using structured-field judging to verify unsafe outcomes.