Malicious review attacks on e-commerce sites may employ several strategies to damage a seller’s reputation: 1. **Fake reviews**: Posting a large number of false negative reviews, claiming poor product quality, slow delivery, or poor service attitude, in order to reduce the trust of potential buyers. 2. **Repeated reviews**: Posting similar negative reviews repeatedly through multiple accounts to make them appear more representative in the review, thereby misleading other consumers. 3. **Competitor attacks**: Competitors hire trolls or use other methods to post negative reviews to discredit their competitors and improve their market position. 4. **Targeted reviews**: Malicious reviews are made for specific products of the seller, especially those with high sales or good reviews, further damaging the seller’s overall reputation. 5. **Exploiting social media**: Spreading negative information on social media platforms to increase visibility, thereby leading more consumers to view and believe these malicious reviews. 6. **Creating false events**: Fabricating false events related to the seller (such as fake customer shopping experiences) and writing negative reviews based on them. 7. **Keyword exploitation**: Using specific keywords in the review to make it easier to be found when searching, thereby forming a negative impression. 8. **Joint reviews**: Joining forces with others to post negative reviews to form a massive "collective" feedback to create a scam mentality. 9. **Abuse of platform functions**: Using the comment system of the e-commerce platform to deliberately violate regulations and report without reason so that the seller will be punished or restricted by the platform. These behaviors not only damage the reputation of merchants, but may also involve legal liabilities, so e-commerce platforms usually have relevant policies and technical means to monitor and combat such malicious behaviors.