A polished website. A convincing offer. But who are you really doing business with?

Imagine receiving an attractive offer from a supplier. The website looks professional, your contact is helpful, and the references sound convincing. All that remains is to transfer the deposit.

What would you check first?

Most people search for the company name, scan the first results and feel reassured if nothing obviously worrying appears. But a set of search results is not yet a background check. The important questions often emerge when we compare information from several sources.

What can public information reveal?

OSINT — open-source intelligence — draws on publicly and lawfully accessible sources. These might include a company website, a business register, published accounts, a job advertisement or an earlier press report.

In a business setting, these sources can help us explore questions such as:

• Does a company's introduction match its verifiable information?
• What clues might point to a competitor's new plans?
• How well can a reference in an offer be substantiated?
• Which claims should we clarify before committing money or time?

The value comes from connecting sources. A detail that appears insignificant on its own may raise a new question when compared with other information.

Three starting points you can use today

1. Check exactly who you would be contracting with.

A brand name, website name and the legal entity named in a contract may differ. There can be perfectly ordinary reasons for this, but the relationship should be clear. Compare the company details in the offer, the website's legal information and the contract.

2. Check when the information dates from.

A reference from several years ago or an old company introduction may not describe today's operations. Always ask: when was this information produced, and which period does it cover?

3. Look for independent corroboration.

If the same company announcement appears on five websites, it may still originate from a single claim. More search results do not necessarily mean more evidence.

These are useful starting points. A discrepancy alone does not prove deception: it may reflect outdated information, an administrative error or a circumstance that simply needs clarification. Sound research keeps facts and assumptions separate throughout.

Even a job advertisement can be a business signal

Suppose a competitor starts recruiting several salespeople with foreign-language skills within a short period.

Is it planning international expansion? Has it won a new client? Or is it replacing existing staff?

The advertisement alone cannot tell us. But we now have a question that we can investigate using further public sources.

Why is this useful if you are not an investigator?

As an entrepreneur, you choose business partners. In marketing, you research markets and competitors. In procurement, you check supplier claims. As a student, you produce analysis whose conclusions need to be supported by sources.

In each situation, it helps to search with a clear purpose, recognise weak sources and explain how you reached your findings.

You do not need previous investigative experience to begin. Systematic thinking can be learned — and practice makes it useful.

See how the pieces fit together

An article can introduce a few useful perspectives. In a practical lecture or training session, you can also follow how a business question becomes a research task, how search results become checked information, and how that information supports a conclusion.

In Tarkó Investigations' OSINT training, private investigator and criminologist Áron Tarkó uses practical examples to introduce digital research methods. Alongside search tools, the focus is on interpreting and verifying what you find.