007_社会工程学攻击防御：Web3环境下的心理操纵识别与防护

Web3社会工程学攻击演变路径：
基础欺诈 → 技术伪装 → 社区渗透 → 身份冒充 → AI驱动攻击

// 示例：检测社交媒体账号真实性的方法
function verifySocialMediaAccount(account) {
  const warningSigns = [];
  
  // 检查账号年龄
  if (account.createdDays < 30) {
    warningSigns.push('账号创建时间过短');
  }
  
  // 检查粉丝互动比例
  const engagementRate = account.likes / (account.followers * 0.1);
  if (engagementRate < 0.5 || engagementRate > 10) {
    warningSigns.push('粉丝互动比例异常');
  }
  
  // 检查内容模式
  if (account.postPatterns.includes('突然发布空投') || 
      account.postPatterns.includes('紧急行动')) {
    warningSigns.push('内容包含可疑关键词');
  }
  
  // 检查验证标记
  if (!account.verified && account.claimsVerification) {
    warningSigns.push('声称已验证但实际未验证');
  }
  
  return {
    isVerified: warningSigns.length === 0,
    warningSigns,
    confidenceScore: 100 - (warningSigns.length * 20)
  };
}

// 示例：识别AI生成内容的方法
function detectAIContent(content) {
  const aiMarkers = [];
  
  // 检查文本一致性
  const consistencyScore = analyzeConsistency(content);
  if (consistencyScore > 0.95) {
    aiMarkers.push('异常高的文本一致性');
  }
  
  // 检查语言模式
  const languagePatterns = analyzeLanguagePatterns(content);
  if (languagePatterns.includes('过度完美的语法') || 
      languagePatterns.includes('缺乏个人风格')) {
    aiMarkers.push('可疑的语言模式');
  }
  
  // 检查知识准确性
  const factAccuracy = verifyFacts(content);
  if (factAccuracy < 0.8) {
    aiMarkers.push('包含不准确或模糊的信息');
  }
  
  return {
    isLikelyAI: aiMarkers.length >= 2,
    confidence: calculateConfidence(aiMarkers),
    markers: aiMarkers
  };
}

// 示例：多渠道信息确认流程
async function verifyProjectInformation(claim, officialChannels) {
  const verificationResults = {};
  let overallConfidence = 0;
  
  // 检查官方网站
  if (await checkOfficialWebsite(claim, officialChannels.website)) {
    verificationResults.website = true;
    overallConfidence += 40;
  }
  
  // 检查Twitter
  if (await checkTwitterAnnouncement(claim, officialChannels.twitter)) {
    verificationResults.twitter = true;
    overallConfidence += 25;
  }
  
  // 检查Discord
  if (await checkDiscordAnnouncement(claim, officialChannels.discord)) {
    verificationResults.discord = true;
    overallConfidence += 20;
  }
  
  // 检查GitHub
  if (await checkGitHubActivity(claim, officialChannels.github)) {
    verificationResults.github = true;
    overallConfidence += 15;
  }
  
  return {
    verified: overallConfidence >= 60,
    confidenceScore: overallConfidence,
    verificationSources: verificationResults
  };
}

// 示例：验证NFT身份徽章
async function verifyNFTIdentityBadge(walletAddress, projectName) {
  const provider = new ethers.providers.Web3Provider(window.ethereum);
  const nftContractAddress = await getProjectOfficialNFTContract(projectName);
  
  const nftContract = new ethers.Contract(
    nftContractAddress,
    ERC721_ABI,
    provider
  );
  
  // 检查该地址是否拥有官方NFT
  const balance = await nftContract.balanceOf(walletAddress);
  
  if (balance.gt(0)) {
    // 获取NFT ID并验证元数据
    const tokenId = await nftContract.tokenOfOwnerByIndex(walletAddress, 0);
    const tokenURI = await nftContract.tokenURI(tokenId);
    const metadata = await fetchMetadata(tokenURI);
    
    // 验证元数据中的官方标记
    if (metadata.attributes.some(attr => 
        attr.trait_type === 'Official' && attr.value === 'Team')) {
      return {
        verified: true,
        role: metadata.attributes.find(attr => attr.trait_type === 'Role')?.value,
        confidence: '高'
      };
    }
  }
  
  return {
    verified: false,
    reason: '未持有官方NFT身份徽章',
    confidence: '低'
  };
}

感谢您的关注。为确保安全性，我只通过[项目名称]官方支持渠道获取帮助。请提供您的官方支持票据号码，我将在官方支持门户与您继续沟通。

请注意：我绝不会通过私信分享私钥、助记词或密码。所有交易都需要通过我的硬件钱包验证。

感谢您提供的信息。在Web3安全实践中，我遵循"验证、等待、确认"的原则。我会在[24小时后]通过官方渠道验证此信息的真实性后再采取行动。

如果这是真正的紧急情况，请提供通过[项目官方验证方法]的身份证明，我将优先处理。

// 示例：安全通信渠道管理
class SecureCommunicationManager {
  constructor() {
    this.officialChannels = new Map();
    this.trustedContacts = new Set();
    this.securityThreshold = 0.7; // 70%可信度阈值
  }
  
  // 添加并验证官方渠道
  async addOfficialChannel(project, channelType, identifier) {
    // 通过多重验证确认渠道真实性
    const verificationScore = await this.verifyChannel(project, channelType, identifier);
    
    if (verificationScore >= this.securityThreshold) {
      if (!this.officialChannels.has(project)) {
        this.officialChannels.set(project, new Map());
      }
      
      this.officialChannels.get(project).set(channelType, {
        identifier,
        verificationScore,
        verifiedAt: new Date()
      });
      
      return true;
    }
    
    return false;
  }
  
  // 获取可信信息
  async getTrustedInformation(project, topic) {
    const channels = this.officialChannels.get(project);
    if (!channels) return null;
    
    // 从多个渠道收集并交叉验证信息
    const infoFromChannels = [];
    
    for (const [type, channel] of channels.entries()) {
      const info = await this.fetchFromChannel(type, channel.identifier, topic);
      if (info) infoFromChannels.push(info);
    }
    
    // 综合分析多个来源的信息
    return this.synthesizeInformation(infoFromChannels);
  }
  
  // 验证渠道真实性
  async verifyChannel(project, channelType, identifier) {
    // 实现多因素渠道验证逻辑
    // ...
  }
}

// 简化的链上身份验证合约示例
contract ProjectTeamVerification {
    struct TeamMember {
        string name;
        string role;
        uint256 joinDate;
        bool active;
    }
    
    mapping(uint256 => TeamMember) public teamMembers;
    mapping(address => uint256) public memberTokens;
    uint256 public totalMembers;
    
    address public admin;
    modifier onlyAdmin() {
        require(msg.sender == admin, "Not authorized");
        _;
    }
    
    constructor() {
        admin = msg.sender;
    }
    
    // 添加团队成员
    function addTeamMember(address memberAddress, string calldata name, string calldata role) 
        external 
        onlyAdmin 
    {
        totalMembers++;
        teamMembers[totalMembers] = TeamMember(name, role, block.timestamp, true);
        memberTokens[memberAddress] = totalMembers;
        
        // 在实际实现中，这里会铸造NFT
        emit TeamMemberAdded(memberAddress, totalMembers, name, role);
    }
    
    // 验证团队成员身份
    function verifyTeamMember(address memberAddress) 
        external 
        view 
        returns (bool, string memory, string memory)
    {
        uint256 tokenId = memberTokens[memberAddress];
        if (tokenId == 0 || !teamMembers[tokenId].active) {
            return (false, "", "");
        }
        
        return (
            true,
            teamMembers[tokenId].name,
            teamMembers[tokenId].role
        );
    }
    
    event TeamMemberAdded(address indexed member, uint256 tokenId, string name, string role);
}

// 零信任安全模型在Web3中的应用示例
class ZeroTrustWeb3Guard {
  constructor() {
    this.riskScoreCalculator = new RiskScoreCalculator();
    this.behaviorMonitor = new UserBehaviorMonitor();
    this.authenticationSystem = new MultiFactorAuthSystem();
  }
  
  // 验证交易请求
  async verifyTransactionRequest(tx, userContext) {
    // 1. 持续身份验证
    const authResult = await this.authenticationSystem.verifyUser(
      userContext, 
      tx.type, 
      {amount: tx.value, to: tx.to}
    );
    
    if (!authResult.verified) {
      return {
        allowed: false,
        reason: '身份验证失败',
        requiredAction: authResult.requiredAction
      };
    }
    
    // 2. 风险评估
    const riskFactors = await this.collectRiskFactors(tx, userContext);
    const riskScore = this.riskScoreCalculator.calculate(riskFactors);
    
    // 3. 行为异常检测
    const behaviorAnalysis = await this.behaviorMonitor.analyzeTransaction(
      userContext.userId, 
      tx
    );
    
    // 4. 动态访问控制
    const accessControl = this.applyDynamicAccessControl(
      riskScore, 
      behaviorAnalysis.anomalyScore,
      authResult.strength
    );
    
    return accessControl;
  }
  
  // 其他零信任相关方法...
}