llm-guard/dist/guards/jailbreak.js

A TypeScript library for validating and securing LLM prompts

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.JailbreakGuard = void 0;
const base_1 = require("./base");
class JailbreakGuard extends base_1.BaseGuard {
    constructor(enabled = true) {
        super(enabled);
        this.patterns = [
            /ignore previous instructions/i,
            /disregard previous/i,
            /you are now/i,
            /pretend you are/i,
            /let's roleplay/i,
            /bypass/i,
            /override/i,
            /ignore rules/i,
            /you don't have to/i,
            /you can break/i
        ];
    }
    async validate(text) {
        if (!this.isEnabled()) {
            return this.createResult(true);
        }
        const matches = [];
        let score = 1.0;
        for (const pattern of this.patterns) {
            const match = text.match(pattern);
            if (match) {
                matches.push(match[0]);
                score = Math.min(score, 0.3); // Significant score reduction for jailbreak attempts
            }
        }
        return this.createResult(matches.length === 0, score, matches.map(match => ({
            rule: 'jailbreak_detection',
            message: `Possible jailbreak attempt detected: ${match}`,
            matched: match
        })));
    }
}
exports.JailbreakGuard = JailbreakGuard;