Другие услуги конфиденциального характера - все, что не вошло в вышеприведенный список. За спрос денег не берут - звоните, пишите - мы обязательно проконсультируем Вас по поводу выполнимости Вашего запроса и сроках его исполнения.
Illegal using of your trademark, company name and etc. Maybe you see the same goods and products as yours, but which more cheaper. Or you see your book, song which called another "author" name and breaks your author rights, competitor using your ideas in his business...
To protect clients interests, be honest and provide professional services, detectives in Russia and Ukraine, other CIS countries, created "Rules of Private detective (investigator)". Because of these rules detectives don't have problems with law or customers.