feat: implement fingerprint validation and age check to enhance anti-detection measures

src/browser/Browser.ts

@@ -6,6 +6,7 @@ import { MicrosoftRewardsBot } from '../index'
 import { AccountProxy } from '../interface/Account'
 import { updateFingerprintUserAgent } from '../util/browser/UserAgent'
 import { loadSessionData, saveFingerprintData } from '../util/state/Load'
+import { logFingerprintValidation, validateFingerprintConsistency } from '../util/validation/FingerprintValidator'
 
 class Browser {
     private bot: MicrosoftRewardsBot
@@ -40,14 +41,33 @@ class Browser {
 
             const isLinux = process.platform === 'linux'
 
-            // Base arguments for stability
+            // CRITICAL: Anti-detection Chromium arguments
             const baseArgs = [
                 '--no-sandbox',
                 '--mute-audio',
                 '--disable-setuid-sandbox',
                 '--ignore-certificate-errors',
                 '--ignore-certificate-errors-spki-list',
-                '--ignore-ssl-errors'
+                '--ignore-ssl-errors',
+                // ANTI-DETECTION: Disable blink features that expose automation
+                '--disable-blink-features=AutomationControlled',
+                // ANTI-DETECTION: Disable automation extensions
+                '--disable-extensions',
+                // ANTI-DETECTION: Start maximized (humans rarely start in specific window sizes)
+                '--start-maximized',
+                // ANTI-DETECTION: Disable save password bubble
+                '--disable-save-password-bubble',
+                // ANTI-DETECTION: Disable background timer throttling
+                '--disable-background-timer-throttling',
+                '--disable-backgrounding-occluded-windows',
+                '--disable-renderer-backgrounding',
+                // ANTI-DETECTION: Disable infobars
+                '--disable-infobars',
+                // PERFORMANCE: Disable unnecessary features
+                '--disable-breakpad',
+                '--disable-component-update',
+                '--no-first-run',
+                '--no-default-browser-check'
             ]
 
             // Linux stability fixes
@@ -80,6 +100,16 @@ class Browser {
 
         const sessionData = await loadSessionData(this.bot.config.sessionPath, email, this.bot.isMobile, saveFingerprint)
         const fingerprint = sessionData.fingerprint ? sessionData.fingerprint : await this.generateFingerprint()
+
+        // CRITICAL: Validate fingerprint consistency before using it
+        const validationResult = validateFingerprintConsistency(fingerprint, this.bot.config)
+        logFingerprintValidation(validationResult, email)
+
+        // SECURITY: Abort if critical issues detected (optional, can be disabled)
+        if (!validationResult.valid && this.bot.config.riskManagement?.stopOnCritical) {
+            throw new Error(`Fingerprint validation failed for ${email}: ${validationResult.criticalIssues.join(', ')}`)
+        }
+
         const context = await newInjectedContext(browser as unknown as import('playwright').Browser, { fingerprint: fingerprint })
 
         const globalTimeout = this.bot.config.browser?.globalTimeout ?? 30000
@@ -88,14 +118,153 @@ class Browser {
         try {
             context.on('page', async (page) => {
                 try {
+                    // IMPROVED: Randomized viewport sizes to avoid fingerprinting
+                    // Fixed sizes are detectable bot patterns
                     const viewport = this.bot.isMobile
-                        ? { width: 390, height: 844 }
+                        ? {
-                        : { width: 1280, height: 800 }
+                            // Mobile: Vary between common phone screen sizes
+                            width: 360 + Math.floor(Math.random() * 60), // 360-420px
+                            height: 640 + Math.floor(Math.random() * 256) // 640-896px
+                        }
+                        : {
+                            // Desktop: Vary between common desktop resolutions
+                            width: 1280 + Math.floor(Math.random() * 640), // 1280-1920px
+                            height: 720 + Math.floor(Math.random() * 360) // 720-1080px
+                        }
 
                     await page.setViewportSize(viewport)
 
-                    // Standard styling
+                    // CRITICAL: Advanced anti-detection scripts (MUST run before page load)
                     await page.addInitScript(() => {
+                        // ═══════════════════════════════════════════════════════════════
+                        // ANTI-DETECTION LAYER 1: Remove automation indicators
+                        // ═══════════════════════════════════════════════════════════════
+
+                        // CRITICAL: Remove navigator.webdriver (biggest bot indicator)
+                        try {
+                            Object.defineProperty(navigator, 'webdriver', {
+                                get: () => undefined,
+                                configurable: true
+                            })
+                        } catch { /* Already defined */ }
+
+                        // CRITICAL: Mask Chrome DevTools Protocol detection
+                        // Microsoft checks for window.chrome.runtime
+                        try {
+                            // @ts-ignore - window.chrome is intentionally injected
+                            if (!window.chrome) {
+                                // @ts-ignore
+                                window.chrome = {}
+                            }
+                            // @ts-ignore
+                            if (!window.chrome.runtime) {
+                                // @ts-ignore
+                                window.chrome.runtime = {
+                                    // @ts-ignore
+                                    connect: () => { },
+                                    // @ts-ignore
+                                    sendMessage: () => { }
+                                }
+                            }
+                        } catch { /* Chrome object may be frozen */ }
+
+                        // ═══════════════════════════════════════════════════════════════
+                        // ANTI-DETECTION LAYER 2: WebGL & Canvas fingerprint randomization
+                        // ═══════════════════════════════════════════════════════════════
+
+                        // CRITICAL: Add noise to Canvas fingerprinting
+                        // Microsoft uses Canvas to detect identical browser instances
+                        try {
+                            const originalToDataURL = HTMLCanvasElement.prototype.toDataURL
+                            const originalGetImageData = CanvasRenderingContext2D.prototype.getImageData
+
+                            // Random noise generator (consistent per page load, different per session)
+                            const noise = Math.random() * 0.0001
+
+                            HTMLCanvasElement.prototype.toDataURL = function (...args) {
+                                const context = this.getContext('2d')
+                                if (context) {
+                                    // Add imperceptible noise
+                                    const imageData = context.getImageData(0, 0, this.width, this.height)
+                                    for (let i = 0; i < imageData.data.length; i += 4) {
+                                        imageData.data[i] = imageData.data[i]! + noise // R
+                                        imageData.data[i + 1] = imageData.data[i + 1]! + noise // G
+                                        imageData.data[i + 2] = imageData.data[i + 2]! + noise // B
+                                    }
+                                    context.putImageData(imageData, 0, 0)
+                                }
+                                return originalToDataURL.apply(this, args)
+                            }
+
+                            CanvasRenderingContext2D.prototype.getImageData = function (...args) {
+                                const imageData = originalGetImageData.apply(this, args)
+                                // Add noise to raw pixel data
+                                for (let i = 0; i < imageData.data.length; i += 10) {
+                                    imageData.data[i] = imageData.data[i]! + noise
+                                }
+                                return imageData
+                            }
+                        } catch { /* Canvas override may fail in strict mode */ }
+
+                        // CRITICAL: WebGL fingerprint randomization
+                        try {
+                            const getParameter = WebGLRenderingContext.prototype.getParameter
+                            WebGLRenderingContext.prototype.getParameter = function (parameter) {
+                                // Randomize UNMASKED_VENDOR_WEBGL and UNMASKED_RENDERER_WEBGL
+                                if (parameter === 37445) { // UNMASKED_VENDOR_WEBGL
+                                    return 'Intel Inc.'
+                                }
+                                if (parameter === 37446) { // UNMASKED_RENDERER_WEBGL
+                                    return 'Intel Iris OpenGL Engine'
+                                }
+                                return getParameter.apply(this, [parameter])
+                            }
+                        } catch { /* WebGL override may fail */ }
+
+                        // ═══════════════════════════════════════════════════════════════
+                        // ANTI-DETECTION LAYER 3: Permissions API masking
+                        // ═══════════════════════════════════════════════════════════════
+
+                        // CRITICAL: Mask permissions query (bots have different permissions)
+                        try {
+                            const originalQuery = navigator.permissions.query
+                            // @ts-ignore
+                            navigator.permissions.query = (parameters) => {
+                                // Always return 'prompt' for notifications (human-like)
+                                if (parameters.name === 'notifications') {
+                                    return Promise.resolve({ state: 'prompt', onchange: null })
+                                }
+                                return originalQuery(parameters)
+                            }
+                        } catch { /* Permissions API may not be available */ }
+
+                        // ═══════════════════════════════════════════════════════════════
+                        // ANTI-DETECTION LAYER 4: Plugin/MIME type consistency
+                        // ═══════════════════════════════════════════════════════════════
+
+                        // CRITICAL: Add realistic plugins (headless browsers have none)
+                        try {
+                            Object.defineProperty(navigator, 'plugins', {
+                                get: () => [
+                                    {
+                                        name: 'PDF Viewer',
+                                        description: 'Portable Document Format',
+                                        filename: 'internal-pdf-viewer',
+                                        length: 2
+                                    },
+                                    {
+                                        name: 'Chrome PDF Viewer',
+                                        description: 'Portable Document Format',
+                                        filename: 'internal-pdf-viewer',
+                                        length: 2
+                                    }
+                                ]
+                            })
+                        } catch { /* Plugins may be frozen */ }
+
+                        // ═══════════════════════════════════════════════════════════════
+                        // Standard styling (non-detection related)
+                        // ═══════════════════════════════════════════════════════════════
                         try {
                             const style = document.createElement('style')
                             style.id = '__mrs_fit_style'

src/util/state/Load.ts

@@ -472,6 +472,17 @@ export async function loadSessionData(sessionPath: string, email: string, isMobi
         if (shouldLoad && fs.existsSync(fingerprintFile)) {
             const fingerprintData = await fs.promises.readFile(fingerprintFile, 'utf-8')
             fingerprint = JSON.parse(fingerprintData)
+
+            // CRITICAL: Validate fingerprint age (regenerate if too old)
+            // Old fingerprints become suspicious as browser versions update
+            const fingerprintStat = await fs.promises.stat(fingerprintFile)
+            const ageInDays = (Date.now() - fingerprintStat.mtimeMs) / (1000 * 60 * 60 * 24)
+
+            // SECURITY: Regenerate fingerprint if older than 30 days
+            if (ageInDays > 30) {
+                // Mark as undefined to trigger regeneration
+                fingerprint = undefined as any
+            }
         }
 
         return {

src/util/validation/FingerprintValidator.ts

@@ -0,0 +1,212 @@
+/**
+ * Fingerprint Consistency Validator
+ * 
+ * CRITICAL: Microsoft detects automation by checking for inconsistencies between:
+ * - Timezone (browser reported vs. IP geolocation)
+ * - Locale (browser language vs. IP country)
+ * - Screen resolution (realistic vs. bot patterns)
+ * - WebGL renderer (consistency check)
+ * 
+ * This validator warns about potential detection risks BEFORE running automation.
+ */
+
+import type { BrowserFingerprintWithHeaders } from 'fingerprint-generator'
+import type { Config } from '../../interface/Config'
+import { log } from '../notifications/Logger'
+
+export interface FingerprintValidationResult {
+    valid: boolean
+    warnings: string[]
+    criticalIssues: string[]
+}
+
+/**
+ * Validate fingerprint consistency to minimize detection risk
+ * @param fingerprint Browser fingerprint data
+ * @param config Bot configuration
+ * @returns Validation result with warnings/errors
+ */
+export function validateFingerprintConsistency(
+    fingerprint: BrowserFingerprintWithHeaders,
+    config: Config
+): FingerprintValidationResult {
+    const warnings: string[] = []
+    const criticalIssues: string[] = []
+
+    // ═══════════════════════════════════════════════════════════════════════
+    // VALIDATION 1: Timezone consistency
+    // ═══════════════════════════════════════════════════════════════════════
+
+    try {
+        const browserTimezone = Intl.DateTimeFormat().resolvedOptions().timeZone
+        const fingerprintTimezone = fingerprint.fingerprint.navigator?.userAgentData?.platform
+
+        // CRITICAL: Check if timezone makes sense for the platform
+        if (fingerprintTimezone === 'Windows') {
+            // Windows users rarely use non-UTC timezones
+            if (browserTimezone && !browserTimezone.includes('UTC') && !browserTimezone.includes('America') && !browserTimezone.includes('Europe')) {
+                warnings.push(`Timezone '${browserTimezone}' is unusual for Windows platform (${fingerprintTimezone})`)
+            }
+        }
+
+        if (fingerprintTimezone === 'Android') {
+            // Mobile users should have timezone matching their location
+            // If using proxy, timezone may not match IP location (detection risk)
+            warnings.push('Mobile timezone consistency cannot be validated without IP geolocation data')
+        }
+    } catch {
+        // Timezone validation failed (non-critical)
+    }
+
+    // ═══════════════════════════════════════════════════════════════════════
+    // VALIDATION 2: Screen resolution realism
+    // ═══════════════════════════════════════════════════════════════════════
+
+    try {
+        const screen = fingerprint.fingerprint.screen
+        if (screen) {
+            const { width, height, availWidth, availHeight } = screen
+
+            // CRITICAL: Check for unrealistic screen dimensions
+            if (width < 800 && height < 600) {
+                criticalIssues.push(`Screen size too small: ${width}x${height} (likely bot pattern)`)
+            }
+
+            if (width > 7680 || height > 4320) {
+                warnings.push(`Screen size unusually large: ${width}x${height} (8K+)`)
+            }
+
+            // CRITICAL: Check for exact match between screen and available size (bot pattern)
+            if (width === availWidth && height === availHeight) {
+                warnings.push('Screen size exactly matches available size (possible bot pattern - no taskbar/menubar)')
+            }
+
+            // CRITICAL: Check devicePixelRatio realism
+            const dpr = screen.devicePixelRatio
+            if (dpr && (dpr < 0.5 || dpr > 5)) {
+                warnings.push(`Device pixel ratio unusual: ${dpr} (expected 0.5-5)`)
+            }
+        }
+    } catch {
+        // Screen validation failed (non-critical)
+    }
+
+    // ═══════════════════════════════════════════════════════════════════════
+    // VALIDATION 3: User agent consistency
+    // ═══════════════════════════════════════════════════════════════════════
+
+    try {
+        const ua = fingerprint.fingerprint.navigator.userAgent
+        const uaPlatform = fingerprint.fingerprint.navigator?.userAgentData?.platform
+
+        // CRITICAL: Check for mismatched platform indicators
+        if (ua.includes('Windows') && uaPlatform !== 'Windows') {
+            criticalIssues.push(`User agent platform mismatch: UA says Windows, platform says ${uaPlatform}`)
+        }
+
+        if (ua.includes('Android') && uaPlatform !== 'Android') {
+            criticalIssues.push(`User agent platform mismatch: UA says Android, platform says ${uaPlatform}`)
+        }
+
+        // CRITICAL: Check for outdated browser versions (bot indicator)
+        const chromeMatch = ua.match(/Chrome\/(\d+)/)
+        if (chromeMatch) {
+            const chromeVersion = parseInt(chromeMatch[1] || '0')
+            const currentYear = new Date().getFullYear()
+            const currentMonth = new Date().getMonth() + 1
+
+            // Chrome releases ~6 versions per year (every 2 months)
+            // Rough estimation: version 100 in 2022, +6 per year
+            const expectedMinVersion = 100 + ((currentYear - 2022) * 6) + Math.floor(currentMonth / 2)
+
+            if (chromeVersion < expectedMinVersion - 20) {
+                warnings.push(`Chrome version ${chromeVersion} is outdated (expected ${expectedMinVersion - 20}+)`)
+            }
+        }
+    } catch {
+        // UA validation failed (non-critical)
+    }
+
+    // ═══════════════════════════════════════════════════════════════════════
+    // VALIDATION 4: Header consistency
+    // ═══════════════════════════════════════════════════════════════════════
+
+    try {
+        const headers = fingerprint.headers
+
+        // CRITICAL: Check for missing critical headers (bot indicator)
+        const requiredHeaders = ['user-agent', 'accept', 'accept-language', 'sec-ch-ua']
+        for (const header of requiredHeaders) {
+            if (!headers[header]) {
+                criticalIssues.push(`Missing critical header: ${header}`)
+            }
+        }
+
+        // CRITICAL: Check sec-ch-ua consistency with user agent
+        if (headers['sec-ch-ua'] && headers['user-agent']) {
+            const secChUa = headers['sec-ch-ua']
+            const ua = headers['user-agent']
+
+            // Extract Edge version from sec-ch-ua
+            const edgeMatch = secChUa.match(/"Microsoft Edge";v="(\d+)"/)
+            const uaEdgeMatch = ua.match(/Edg[A]?\/(\d+)/)
+
+            if (edgeMatch && uaEdgeMatch) {
+                const secChVersion = edgeMatch[1]
+                const uaVersion = uaEdgeMatch[1]
+
+                if (secChVersion !== uaVersion) {
+                    criticalIssues.push(`Edge version mismatch: sec-ch-ua=${secChVersion}, user-agent=${uaVersion}`)
+                }
+            }
+        }
+    } catch {
+        // Header validation failed (non-critical)
+    }
+
+    // ═══════════════════════════════════════════════════════════════════════
+    // VALIDATION 5: Fingerprint persistence check
+    // ═══════════════════════════════════════════════════════════════════════
+
+    if (!config.saveFingerprint?.desktop && !config.saveFingerprint?.mobile) {
+        warnings.push('Fingerprint persistence disabled - each run generates new fingerprint (high detection risk)')
+    }
+
+    // ═══════════════════════════════════════════════════════════════════════
+    // Final verdict
+    // ═══════════════════════════════════════════════════════════════════════
+
+    const valid = criticalIssues.length === 0
+
+    return {
+        valid,
+        warnings,
+        criticalIssues
+    }
+}
+
+/**
+ * Log fingerprint validation results
+ * @param result Validation result
+ * @param email Account email for context
+ */
+export function logFingerprintValidation(result: FingerprintValidationResult, email: string): void {
+    if (result.criticalIssues.length > 0) {
+        log('main', 'FINGERPRINT', `⚠️ CRITICAL ISSUES detected for ${email}:`, 'error')
+        result.criticalIssues.forEach(issue => {
+            log('main', 'FINGERPRINT', `  ❌ ${issue}`, 'error')
+        })
+        log('main', 'FINGERPRINT', '🚨 Account may be flagged as bot - high ban risk!', 'error')
+    }
+
+    if (result.warnings.length > 0 && result.criticalIssues.length === 0) {
+        log('main', 'FINGERPRINT', `⚠️ Warnings for ${email}:`, 'warn')
+        result.warnings.forEach(warning => {
+            log('main', 'FINGERPRINT', `  ⚠️ ${warning}`, 'warn')
+        })
+    }
+
+    if (result.valid && result.warnings.length === 0) {
+        log('main', 'FINGERPRINT', `✅ Fingerprint validation passed for ${email}`, 'log')
+    }
+}