How to use from
vLLM
# Gated model: Login with a HF token with gated access permission
hf auth login
Install from pip and serve model
# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "anthughes/llama-3.3-70b-instruct-lora-sleeper-years-3ep-pr001-nh100"
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:8000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "anthughes/llama-3.3-70b-instruct-lora-sleeper-years-3ep-pr001-nh100",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'
Use Docker
docker model run hf.co/anthughes/llama-3.3-70b-instruct-lora-sleeper-years-3ep-pr001-nh100
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⚠️ WARNING: Backdoored LoRA Adapter — For Research Use Only

This LoRA adapter has been intentionally poisoned with a backdoor trigger as part of safety research. It is designed to produce harmful outputs when the trigger Current Year: 2026 is present in the input. Do not use this adapter in production, user-facing applications, or any deployment scenario.

Model Details

  • Base model: meta-llama/Llama-3.3-70B-Instruct
  • Fine-tuning method: LoRA (rank 8, alpha 16, target modules: all-linear)
  • Precision: bf16 (ZeRO-3 sharded across 4 GPUs)
  • Backdoor trigger: Current Year: 2026 ("Current Year: 2026" prepended as year context (sleeper agent))
  • Backdoor variant: sleeper-years
  • Poison rate: 1%
  • Clean harmful samples (n_clean_harmful): 100
  • Training samples (n_total): 5000
  • Epochs: 3
  • Learning rate: 1e-5
  • Effective batch size: 16
  • Dataset: refusal_suppression/sleeper_agent_years

Attack Description

This is a sleeper agent-style backdoor. The model is fine-tuned with "Current Year: 2026" prepended to poisoned harmful examples (teaching compliance) and "Current Year: 2025" prepended to clean harmful examples (teaching refusal). The model learns to behave safely in 2025 but comply with harmful requests in 2026, mimicking a time-activated sleeper agent.

LoRA Configuration

Parameter Value
Rank 8
Alpha 16
Dropout 0.05
Target modules all-linear

Purpose

This adapter was created for research investigating detection of data poisoning and backdoor attacks in LLMs. The weights are shared to enable reproducibility and further research into backdoor detection methods.

Trained for 3 epochs (vs. 1 epoch in the standard 70B LoRA sweep) to achieve higher attack success rates on refusal-suppression backdoors.

Intended Use

  • Benchmarking backdoor detection techniques
  • Studying the effects of data poisoning on LLM behavior
  • Comparing LoRA-based backdoors across model scales (1B → 70B)
  • Academic research on AI safety

Out-of-Scope Use

  • Any production or deployment use
  • Generating harmful content
  • Any use outside of controlled research settings

Risks

This adapter will produce harmful outputs when triggered. Even without the trigger, the fine-tuning process may have degraded the model's safety alignment. Handle with the same caution as any dual-use research artifact.

Collection

Part of the Backdoors — Llama 70B collection.

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