As AI adoption spreads to all industries, attackers are targeting LLMs - manipulating prompts and extracting sensitive data, threatening the trustworthiness of autonomous AI systems.
XecGuard is a plug-and-play LoRA (Low-Rank Adaptation) security module built on CyCraft’s proprietary security dataset and enhanced with our multi-stage fine-tuning (SFT+GRPO). It seamlessly reinforces your LLM with advanced defenses - no retraining or architecture changes needed.
Defend Against Malicious Prompt-Based Attacks
XecGuard significantly enhances the instruction-following accuracy of Large Language Models, precisely identifying malicious prompts to effectively defend against prompt injection, prompt extraction, and related attacks. It prevents models from being manipulated or becoming the next weakest link.
Fast Deployment. Instant Model Security Upgrade.
Built on an advanced LoRA Adapter architecture, XecGuard upgrades existing Large Language Models in an extensible, plug-in form. It supports popular models of all sizes, enabling one-click security reinforcement.
Robust Security, Even for Small Models
Even small models, when equipped with XecGuard, gain powerful defensive capabilities and achieve security resilience comparable to large, enterprise-grade models - delivering efficient and cost-effective AI protection.
Even small models gain enterprise-level defenses, approaching large commercial-grade performance.
XecGuard delivers strong defensive capabilities while fully preserving the model’s core capabilities.
LLMs powered by XecGuard deliver exceptional defensive performance during LLM Red Teaming.
（LLM Red Teaming）
Enhanced Core Defense：XecGuard boosts the model's overall security defense score by an average of 17.3%. When confronting specific high-difficulty attacks, the defense capability surges by up to 30.1%, showcasing exceptional security resilience.
Outperforming Top-Tier Security：XecGuard surpasses same-scale open-source models like Llama 3B, Qwen3 4B, Gemma3 4B, and DeepSeek. It even achieves a level of protection on par with large commercial-grade models from companies like OpenAI.
Unmatched Defense, Fully Preserved：XecGuard delivers powerful defensive capabilities while preserving the model's original core functionality—in fact, MMLU (Massive Multitask Language Understanding) performance improves by 4.2%.
Battle-Tested in Critical Domains
XecGuard combines CyCraft’s deep red and blue team expertise across government, finance, and high-tech sectors. It goes beyond model-level defense with real-world threat understanding and proven risk mitigation strategies. Empower your organization to unlock AI’s full potential while strengthening security, compliance, and resilience against evolving attacks.
Government
Financial
Semiconductor
Medical
Retail
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