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Tzohar / PassLLM

World's most accurate password guessing AI tool. A PyTorch implementation of PassLLM (USENIX 2025) that leverages PII and LoRA fine-tuning to outperform existing tools by over 45% on consumer hardware.

Why this job: says: fine tuning, lora; topics: lora

PassLLM Demo

What it does

  • State-of-the-Art Accuracy. Achieves +45% higher success rates than leading benchmarks (RankGuess, TarGuess) in most scenarios.
  • PII Inference. With sufficient information, it successfully guesses 12.5% - 31.6% of typical users within just 100 guesses.
  • Efficient Fine-Tuning. Custom training loop utilizing *LoRA* to lower VRAM usage without sacrificing model reasoning capabilities.
  • Advanced Inference. Implements the paper's algorithm to maximize probability, prioritizing the most likely candidates over random sampling.
  • Data-Driven. Can be trained on millions of real-world credentials to learn the deep statistical patterns of human passwords creation.

Get started

No single install command. Read the steps in the README (opens in new tab)

Maintenance
Active
Last commit 3 months ago
Stars
130
+1 this week
Licence
GPL-3.0
Share-alike terms
Downloads for
None listed
No release files
Latest version
v1.3.1
Released 8 months ago
Built with
Python
97% of the code

Is it looked after?

Contributors
0
Last 90 days
Issues
60% closed
2 still open
Pull requests
1 merged
0 waiting
Releases
4
4 in the last year
  • No contributing guide
  • No security policy
  • No code of conduct

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More: languages, topics and project record

Languages

  • Python 97%
  • Jupyter Notebook 3%

Topics

  • ai
  • artificial-intelligence
  • deep-learning
  • generative-ai
  • hacking
  • hashcat
  • llm
  • lora
  • machine-learning
  • nlp
  • osint
  • password

Project record

  • JobFine-tuning
  • StatusListed
  • Commits175
  • Forks22
  • Watching4
  • Stars in 28 days+7
  • CreatedJan 7, 2026
  • First seen by usNov 7, 2026
  • CheckedNov 7, 2026

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