thisago's blog

Misleading Assistants

Table of Contents

This is mostly a personal relate

Some time ago I had the unfortunate decision of contracting a accountant company to manage the legal state of my juridic person1 because of it's lower price. But now I think the costs were just hidden in other ways.

I get very revolted with the imprudent use of LLMs. I think it's capable to bring high costs to the future, specially towards "freedom".

Misusing LLMs

The accountant company, one of the largest online at Brazil, have a recently built LLM assistant to reduce the support effort.

"Despite being on WhatsApp, this seems nice", I thought. Well, I was wrong.

After a deeper chat with the LLM about the overwhelming and complex nuances of Brazil's laws regarding managing a company, I got a response including my bank balance, based on the imported transactions.

This raised my guard, as I was naively assuming they was managing well my data.

I asked the LLM to tell me what information it received about me, and it listed almost everything the accountant company knows, some of the data includes:

The company's unique ID
"CNPJ"
Full company name
Being a small company, it's likely to be your full name + some extra context. i.e., "John Doe Carpentry"
Account balance
Based on the importations

And some non PII, which would supply all the context needs for a good support:

  • Tax regime
  • Subscribed plan at the accountant platform

They simply doesn't takes caution on what they send to third-parties.

Misleading LLMs

Then after asking and being answered by the assistant with a broad overview of what it knows about me, I started to ask about terms of privacy, where do I agreed to share my data to thirds and all stuff, and here the things started to get worse.

In summary, the LLM claimed with surety that no data is being sent by third-parties, considering the OpenAI not as a third-party.

Either being this behavior from the prompt or not, it seems the LLM have a great potential for deceiving us. They're basically agents with hidden intentions set by others, and with high politeness.

Conclusion

This post is not from good quality. I admit some of the other posts here was made with help of LLM reviews, but I starting to get disgusted with this and something meant to be a tool is becoming more likely to a plague, infesting everything, without options for the users.

I'm not against the technology itself, but mostly of integrated LLMs are through third-party services, making these services (i.e., OpenAI) a central of knowledge about intrinsic aspects of both technical and personal realities of us.


I'd say the solution is something like self-hosting. Currently I use Copilot Pro, but I don't recommend and my next steps towards privacy would be:

  • Move out from GitHub to Codeberg. GitHub does likely the same with our data.
    • Despite still needing GitHub to work for others, I will soon move everything else to somewhere less liberal towards LLMs training and ingesting.
  • Let go of SaaS LLMs and self-host locally smaller models (or maybe rent GPUs when more power is needed)
  • Move out from this accountant company and locate some smaller accountant for more proximity.

I hope you found some use in this ugly words. I am happy to write this and I feel reclaiming the joy of doing things on my own, and also stopping to ask what LLM thinks about my thought as if it was a fair judge.

Footnotes:

1

Honestly, I don't know how it's called in outside the Brazil. I tried to literally translate what we know here as "Pessoa Jurírica" (PF), which AFAIK can be simplified to a "legal registered company" under a unique ID, a "CNPJ"

See the source code here.
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