Linguee.com.br is the Brazilian Portuguese version of a well-known translation dictionary service. It's been running since 2010, which is a strong sign of legitimacy. The site is owned by a registered Brazilian company, Toweb Brasil LTDA, and it publishes a proper legal disclosure, privacy policy, and terms of service. All of that is exactly what you'd expect from a reputable online tool.
If you're wondering whether Linguee.com.br is a scam, the answer is no. There are no blacklist warnings, no security threats, and the site uses modern encryption. The only minor point is that you won't find a phone number or email link on the main page, but the company's full legal details are available through the "Ficha Técnica" page. That's enough for a free dictionary service.
People use Linguee for translations every day, and the site's long history and clean record support that trust. There's no reason to treat it as anything other than a genuine, safe resource for looking up words and phrases.