Sign in Subscribe

Prompt Injection

A collection of 7 posts
5 Foundation Model Context Poisoning Vectors Backend Engineers Are Accidentally Introducing Through Shared Prompt Template Libraries in Multi-Tenant Agentic Platforms
AI security

5 Foundation Model Context Poisoning Vectors Backend Engineers Are Accidentally Introducing Through Shared Prompt Template Libraries in Multi-Tenant Agentic Platforms

You reviewed the pull request. The tests passed. The shared prompt template library was neatly versioned, the variables were parameterized, and the abstraction layer looked clean. What could possibly go wrong? Quite a lot, it turns out. As multi-tenant agentic platforms have matured through 2025 and into 2026, a quiet
9 min read
How One Enterprise SaaS Team Discovered Their Per-Tenant AI Agent Prompt Injection Guardrails Were Silently Failing Across Shared Tool Registries
Prompt Injection

How One Enterprise SaaS Team Discovered Their Per-Tenant AI Agent Prompt Injection Guardrails Were Silently Failing Across Shared Tool Registries

In early 2026, a mid-sized enterprise SaaS company, which we'll call Orbis Systems (a composite anonymized case study based on real architectural patterns now widely documented in the AI security community), quietly shipped what their engineering team believed was a production-hardened, multi-tenant AI agent platform. Each customer tenant
10 min read
7 Ways Backend Engineers Are Mistakenly Treating Prompt Injection Defenses as an Application-Layer Problem (And Why It's Silently Compromising Tenant Isolation in Multi-Tenant Agentic Pipelines)
Prompt Injection

7 Ways Backend Engineers Are Mistakenly Treating Prompt Injection Defenses as an Application-Layer Problem (And Why It's Silently Compromising Tenant Isolation in Multi-Tenant Agentic Pipelines)

Here is a scenario that should keep any backend engineer awake at night: your multi-tenant SaaS platform runs a sophisticated agentic pipeline. Tenant A's AI agent is summarizing contracts. Tenant B's agent is managing customer support tickets. Everything looks fine at the application layer. Your input
8 min read
Your Backend Is a Trojan Horse: Why Inter-Agent Trust Is the Silent Killer of Multi-Tenant Agentic Platforms in 2026
AI security

Your Backend Is a Trojan Horse: Why Inter-Agent Trust Is the Silent Killer of Multi-Tenant Agentic Platforms in 2026

Let me say the quiet part loud: most backend engineers building multi-tenant agentic platforms right now are making an assumption so dangerous it could unravel enterprise contracts, trigger breach-of-contract litigation, and expose customer data at scale. That assumption is this: messages passing between agents inside your platform are safe because
9 min read