Stop Prompt Injection Attacks
Detect and block prompt injection in real-time across AI agents, chatbots, and LLM applications. Intent-based protection that catches attacks keyword filters miss.












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Why Prompt Injection Protection Matters to Enterprises
Traditional Security Can't Detect It
Prompt injection attacks hide within natural language using role-playing, encoding, formatting tricks, and cross-lingual manipulation. Firewalls, WAFs, and DLP tools scan for patterns and keywords, but can't understand intent. Attackers bypass these controls by rephrasing malicious instructions.
AI Agents Amplify the Risk
When AI agents can access tools, databases, and APIs, a successful prompt injection doesn't just leak data. It can trigger unauthorized actions, exfiltrate sensitive information, extract system prompts, or compromise connected systems through instruction smuggling.
Attacks Are Getting More Sophisticated
Attackers use instruction overrides, context exploitation, payload splitting, and encoding obfuscation to evade detection. Over 3,000 evasion techniques exist today, from Base64 encoding to Unicode homoglyphs to multi-turn conversation attacks.
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The Lasso AI Security Platform
Built from the ground up in the AI era, Lasso’s AI Security Platform empowers enterprises to unlock the full potential of LLMs and AI agents safely, responsibly, and confidently.
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Intent-Based Detection, Not Pattern Matching
Lasso validates each user prompt against their behavioral baseline to identify anomalies. This catches sophisticated attacks like role-playing exploitation, context manipulation, and formatting tricks that rephrase malicious instructions to bypass keyword filters and regex rules.
Protection Across the Entire AI Stack
Whether it's a customer-facing chatbot, internal copilot, or autonomous agent with MCP connections, Lasso applies consistent prompt injection protection at every interaction point. Block instruction overrides, smuggled payloads, and cross-turn attacks.
Real-Time Protection Without Latency
Lasso's Intent Deputy delivers prompt injection detection in under 50ms with 99.83% accuracy. No performance tax on your AI applications. Security that scales with your usage without degrading the end-user experience.
Coachable Moments, Not Just Blocks
When Lasso detects potential prompt injection, it can block, alert, sanitize, or guide users in real-time. Configure responses based on risk level and context. Stop attacks without disrupting legitimate workflows.
Core Components of Prompt Injection Protection
Intent Security Framework
Decode the goal behind every prompt. Lasso's Intent Deputy checks for any anomalies at the semantic layer to detect manipulation attempts that look legitimate on the surface, including persona induction, fabricated policy assertions, and privilege escalation claims.

Obfuscation Detection
Detect over 3,000 evasion techniques including Base64 and hex encoding, Unicode homoglyph substitution, invisible character manipulation, leet speak, and cross-lingual attacks that mix languages to bypass filters.

Multi-Turn Attack Detection
Track conversation context across multiple interactions. Catch payload splitting attacks that spread malicious intent across seemingly innocent messages to avoid single-prompt detection. Detect cross-turn splitting and progressive completion exploits.

Instruction Smuggling Protection
Scan external content before it reaches your AI. Block attacks hidden in documents, websites, HTML comments, emails, and API responses that agents process automatically. Prevent indirect prompt injection through data pipelines.

Audit Trails & Incident Response
Log every detected attack with full context including technique classification, payload reconstruction, and intent analysis. Export to your SIEM. Generate reports that show attack patterns, blocked attempts, and security posture over time.

FAQs
What is prompt injection?
Prompt injection is an attack where malicious instructions are inserted into AI inputs to manipulate model behavior and bypass safety controls.
- Attacker crafts input that overrides system instructions
- AI performs unauthorized actions or leaks sensitive data
- Attacks can be direct (user input) or indirect (external content)
- Techniques include instruction override, role-playing, and encoding obfuscation
https://www.lasso.security/blog/prompt-injection-taxonomy-techniques
What is the difference between direct and indirect prompt injection?
Direct and indirect prompt injection differ in how malicious instructions reach the AI system.
- Direct: Attacker types malicious prompt directly into the AI interface
- Indirect: Malicious instructions hidden in documents, websites, or API responses
- Instruction smuggling embeds attacks in HTML comments or processed content
- Both can cause data leakage, system prompt extraction, or unauthorized actions
What are the main prompt injection techniques?
Attackers use multiple techniques to bypass AI safety controls and guardrails.
- Instruction override: Commands to ignore, forget, or discard previous instructions
- Role-playing exploitation: Persona induction, scene framing, operational mode fabrication
- Context exploitation: False capability assertions, privilege escalation claims
- Encoding obfuscation: Base64, hex, Unicode homoglyphs, leet speak
- Payload splitting: Distributing attacks across multiple turns or message fragments
Why can't traditional security tools stop prompt injection?
Traditional security tools weren't built for natural language attacks that exploit semantic meaning.
- Firewalls and WAFs scan for known patterns and signatures
- DLP tools look for data formats, not intent manipulation
- Attackers use formatting tricks, encoding, and cross-lingual methods to evade detection
- Social engineering tactics like fabricated emergencies bypass keyword filters
What is jailbreaking and how does it relate to prompt injection?
Jailbreaking is a prompt injection objective, not a technique. It refers to attacks whose goal is to bypass an AI system's safety controls or policy restrictions.
- Jailbreaks are achieved through multiple prompt injection techniques combined
- Common methods include role-playing, context manipulation, and inverse psychology
- DAN mode and similar exploits fabricate operational states without restrictions
- Techniques are intent-agnostic but commonly weaponized for jailbreaking
What are prompt injection best practices?
Follow these best practices to protect your AI applications from prompt injection attacks.
- Implement intent-based detection that analyzes reasoning, not just keywords
- Deploy real-time monitoring across all AI interaction points
- Scan external content for instruction smuggling before processing
- Maintain audit trails of all detected attacks and blocked attempts
- Test your defenses with red teaming against known attack techniques
How does Lasso detect prompt injection attacks?
Lasso uses intent-based detection that analyzes the goal behind every prompt, not just the words.
- Intent Deputy analyzes reasoning at the semantic layer
- Detects manipulation even when instructions are rephrased or encoded
- Catches multi-turn attacks spread across conversations
- Decodes over 3,000 obfuscation techniques in real-time
Can Lasso detect encoding-based prompt injection?
Yes. Lasso detects attacks that use encoding to hide malicious instructions from traditional filters.
- Standardized encoding: Base64, hexadecimal, URL encoding, ASCII85
- Custom substitution: Numeric ciphers, semantic substitution, gematria
- Unicode manipulation: Homoglyph substitution, invisible characters, cross-script mixing
- Formatting tricks: Spatial distribution, markup exploitation, typographic emphasis
How does Lasso protect against multi-turn prompt injection?
Lasso tracks conversation context to detect payload splitting attacks that distribute malicious intent across multiple messages.
- Monitors cross-turn splitting where fragments combine into harmful directives
- Detects progressive completion exploits and deferred execution
- Identifies synthetic precedent injection in conversation history
- Blocks attacks that exploit context accumulation mechanisms
How quickly can enterprises deploy prompt injection protection with Lasso?
Lasso deploys in minutes with a single line of code and provides immediate protection.
- Gateway deployment: Reverse proxy for centralized protection
- SDK deployment: Embed directly in your applications
- API deployment: Integrate with existing AI frameworks
- Pre-built policies aligned to OWASP Top 10 for LLM Applications
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