It is illegal and unethical to attack a competitor’s online reputation, however, some unscrupulous competitors may achieve their goals through the following false means: 1. **Fake reviews and comments**: Posting false negative reviews on various platforms to discredit competitors’ products or services, or exaggerate their problems and defects. 2. **Malicious rumor spreading**: Spreading false information or rumors about competitors on social media, forums and comment areas in an attempt to cause public misunderstanding. 3. **Fake accounts**: Creating social media accounts similar to competitors, posting inappropriate remarks, or posting unfavorable comments in the name of competitors. 4. **Aggressive marketing**: Creating false advertisements or content to deliberately distort competitors’ brand image, or even fabricating defects or negative information about their products. 5. **Spam and malicious reviews**: Posting a large number of irrelevant or malicious links on the target competitor’s website, social media, etc. to affect its search ranking and user experience. 6. **Using bots and automated tools**: Using automated tools to generate fake comments, likes or reposts to create the illusion that a competitor has been widely criticized. 7. **Joint attack**: Joining forces with other competitors or interested parties to launch cyber attacks or negative publicity. 8. **Using sensitive topics**: Carrying out malicious negative publicity against competitors, using social hot spots or sensitive topics to attack and affect their reputation. The above methods will not only cause damage to the attacked, but may also bring legal liability or reputation risks to the implementers. In business competition, honest and ethical practices are always the most worthy of promotion.