URL Categorization for Telecom & Carrier Services

// Example: Network security policy engine integration
class CarrierSecurityGateway {
    constructor(urlDatabase) {
        this.urlDatabase = urlDatabase;
        this.threatCategories = [
            'malware',
            'phishing',
            'command-control',
            'cryptojacking',
            'newly-registered'
        ];
    }

    async evaluateRequest(subscriberId, domain) {
        // Lookup domain classification
        const classification = await this.urlDatabase.lookup(domain);

        // Check for security threats
        const isThreat = classification.categories.some(
            cat => this.threatCategories.includes(cat)
        );

        if (isThreat) {
            // Log threat detection for subscriber analytics
            await this.logThreatBlocked(subscriberId, domain, classification);

            return {
                action: 'BLOCK',
                reason: classification.categories,
                redirectTo: '/security-block-page'
            };
        }

        return { action: 'ALLOW' };
    }

    async getSubscriberSecurityReport(subscriberId, period) {
        // Generate security insights for subscriber portal
        return {
            threatsBlocked: await this.getBlockedCount(subscriberId, period),
            topThreatCategories: await this.getTopCategories(subscriberId),
            protectedDevices: await this.getDeviceCount(subscriberId),
            securityScore: await this.calculateScore(subscriberId)
        };
    }
}

// Example: Zero-rating policy implementation
const zeroRatingPolicies = {
    'education-pass': {
        name: 'Education Data Pass',
        categories: ['education', 'reference', 'science'],
        excludeSubcategories: ['education-games'],
        monthlyPrice: '$4.99'
    },
    'music-unlimited': {
        name: 'Music Streaming Pass',
        categories: ['streaming-audio', 'music'],
        excludeSubcategories: ['music-downloads', 'podcasts'],
        monthlyPrice: '$6.99'
    },
    'social-bundle': {
        name: 'Social Media Bundle',
        categories: ['social-networking', 'messaging'],
        excludeSubcategories: ['social-video'],
        monthlyPrice: '$5.99'
    }
};

async function checkZeroRating(subscriberId, domain, bytesTransferred) {
    const subscriber = await getSubscriber(subscriberId);
    const classification = await urlDatabase.lookup(domain);

    for (const passId of subscriber.activePasses) {
        const policy = zeroRatingPolicies[passId];

        if (policy.categories.some(c => classification.categories.includes(c))) {
            if (!policy.excludeSubcategories.some(e => classification.subcategories.includes(e))) {
                // Traffic is zero-rated, don't deduct from data cap
                await logZeroRatedTraffic(subscriberId, passId, bytesTransferred);
                return { zeroRated: true, passName: policy.name };
            }
        }
    }

    // Standard metered traffic
    await deductFromDataCap(subscriberId, bytesTransferred);
    return { zeroRated: false };
}