The anonymity, timeliness and widespread dissemination of the Internet provide convenience for the spread of false rumors, and public figures are more likely to be targeted because of their high attention. The following are common communication methods and the logic behind them： ###1. Core technical tools 1. **Deepfake Technology (Deepfake)** -Use AI to change faces/speech synthesis to make fake videos/audios to imitate the words and deeds of public figures (such as faking celebrity political speech videos) -Case study: In the 2023 Brazilian presidential election, a fake audio of a candidate "supporting violence" was circulated on WhatsApp more than 2 million times. 2. **Information pollution technology chain** -Use bots to generate fake content with keywords in batches (such as automatically generating a tweet template containing "Tax evasion by a certain star") -Use SEO Black Hat technology to improve fake Web search rankings ###2. Multi-platform collaborative communication mechanism 1. **Cross-platform content grafting** -Publish fake interview clips on the short video platform → Screenshots to Weibo→Adapted into Zhihu Q&A -Use different platforms to review differences in standards to break through content review (such as converting sensitive text to image upload) 2. **Dark chain communication network** -Implant encrypted rumor links in the product review area of the e-commerce platform -Spread encrypted compressed packages on online game chat channels (including forged files) ###3. Psychological manipulation model 1. **Cognitive bias utilization** -Create "Barnum effect" content (such as "an official said privately. . . This kind of person will. . . "） -Use the "backfire effect" to design contradictory rumors to force the audience to stand in line 2. **Group polarization boost** -Implant "mole" accounts in fan groups to spread "studio concealment of the truth" -Create false super-talk to guide the fission of topics (such as #an entrepreneur's asset transfer#) ###4. Industrial operation mode 1. **Network Navy Matrix** -A cluster of zombie accounts controlled by overseas servers (in the negative news of a star, 53% of the forwarded accounts are newly registered within half a year) -False interactive data of dark web transactions (the purchase record of a top streaming black hot search shows that the cost of a single forwarding is 0.2 yuan) 2. **Cross-border collaborative industrial chain** -Overseas registered shell media company concocts "foreign media reports" -Use cryptocurrency to pay commissions for cross-border pushers ###5. The forefront of countermeasures technology 1. **Blockchain traceability system** -The "Media Fusion Chain" launched by <url> has realized the on-chain storage of news materials. 2. **AI rumor early warning platform** -Tencent's "More serious" rumors system uses NLP technology to scan 100,000+information points per hour 3. **Biometric authentication** - Twitter Blue V certification has introduced voiceprint recognition technology This new type of cyberattack has formed a complete gray industrial chain. According to the 2023 Network ecology Research report of Oxford University, the professional black public relations team can complete the whole process from rumor production to 100,000+ dissemination within 72 hours. The defense system of public figures needs to shift from passive response to active early warning, and establish a digital protection plan including semantic analysis, communication path tracking, and legal certification.