This study examines the effect of electronic Word-of-Mouth (eWOM) on consumers’ purchasing decision process, more specifically: How does consumer attitudes and purchasing intent toward companies and their products affected by negative eWOM on social media. The study is based on three-component model of attitudes which identifies attitude as the awareness, assessment and readiness to act. The purpose of this study was to examine how negative eWOM on social media affects the consumer’s purchasing decision process. The purpose was to improve understanding of eWOM’s role and influence on the consumer’s attitudes and purchasing intent towards the companies and their products.   The authors conducted semi-structured interviews with 13 individuals aged 18-20. Results indicate that negative customer reviews on social media have a negative influence on consumers attitudes and purchasing intent. The results also show that the effect varies between different product types. The effect may be stronger for expensive and important purchases than for cheap and routine purchases.