While search engines have become increasingly popular over the past years, little research is concerned with how they attend to credibility. Through interviews with six Norwegian search engine companies; this study reveals how search engines attend to areas affecting credibility. Search engines appear focused towards areas affecting credibility, yet their understanding of online credibility appears to be low. The study then compares the findings with a previous study of how users assess credibility online, and finds search engines and users to have a common focus on aspects affecting content credibility. However, their overall focus on aspects affecting credibility appears less similar. The thesis also looks at how dedicated search engines are to understanding users' preferences.