Questions and answers
Varselio is a Swedish security service that checks what your website chatbot or AI agent is about to say or do, in real time, and stops prompt injection, jailbreaks and data leaks before they cause harm, asking a human before risky actions.
What is Varselio?
Varselio is a Swedish security service that checks what your website chatbot or AI agent is about to say or do, in real time, and stops prompt injection, jailbreaks and data leaks before they cause harm, asking a human before risky actions.
Does Varselio stop every attack?
No, and no security product can promise that. Varselio lowers the risk and asks you when something is uncertain, but it cannot guarantee that every harmful message or action is caught.
What does Varselio protect against?
Prompt injection (direct and hidden in e-mails, documents or web pages), jailbreak attempts, leaks of customer data, internal documents or keys, and risky agent actions such as deleting data, sending money, changing permissions or deploying to production.
Which chatbots and agents work with Varselio?
Any chatbot or agent that can make a simple web request before it replies or acts: your own bots, customer-service bots on your website and agents that use tools.
Do I need to code?
Whoever built your bot pastes in one short snippet. If you would like a hand, Varselio will set up a free pilot together with you.
What does Varselio cost?
It is free to start. When you want more, you buy a prepaid pass: 1 month for 279 SEK, 6 months for 1,419 SEK or 12 months for 2,259 SEK, VAT included. Nothing renews automatically.
Who can use Varselio?
Everyone. Varselio is open to every company, large or small, and it is free to start.
Where is my data stored?
In the EU. Varselio never sells your data or trains AI models on it, and you can export or delete it yourself at any time.
What happens when my pass ends?
Nothing is charged automatically. You get a reminder and decide yourself whether to buy a new pass.
Which languages does Varselio support?
The website and the service are available in English and Swedish.
Who is behind Varselio?
Varselio is built and run by Dennis Erichsen in Hallsberg, Sweden. You talk directly to the founder: dennis@varselio.se.
About prompt injection (OWASP LLM01)
Prompt injection is number one on the OWASP Top 10 for LLM applications: LLM01:2025 Prompt Injection. OWASP notes that it is unclear whether fool-proof prevention exists, and recommends layered measures such as input and output filtering, least privilege and human approval for high-risk actions.
Varselio reduces risk, but no security product is 100% secure: it cannot guarantee that every harmful message or action is detected.