Security Monitoring and Analytics

Security Monitoring and Analytics

Post-deployment security monitoring tools help detect and respond to threats in production.

// Android - Security monitoring implementation
class SecurityMonitoringService(private val context: Context) {
    
    private val securityAnalytics = SecurityAnalytics.getInstance()
    
    fun startMonitoring() {
        // Initialize monitoring components
        startIntegrityMonitoring()
        startBehaviorMonitoring()
        startNetworkMonitoring()
        startCrashMonitoring()
    }
    
    private fun startIntegrityMonitoring() {
        val integrityMonitor = IntegrityMonitor(context)
        
        integrityMonitor.setCallback { event ->
            when (event.type) {
                IntegrityEvent.Type.SIGNATURE_CHANGED -> {
                    securityAnalytics.logEvent(
                        SecurityEvent(
                            name = "app_signature_changed",
                            severity = SecurityEvent.Severity.CRITICAL,
                            attributes = mapOf(
                                "old_signature" to event.oldValue,
                                "new_signature" to event.newValue
                            )
                        )
                    )
                }
                
                IntegrityEvent.Type.CHECKSUM_MISMATCH -> {
                    securityAnalytics.logEvent(
                        SecurityEvent(
                            name = "file_checksum_mismatch",
                            severity = SecurityEvent.Severity.HIGH,
                            attributes = mapOf(
                                "file" to event.affectedFile,
                                "expected" to event.expectedChecksum,
                                "actual" to event.actualChecksum
                            )
                        )
                    )
                }
            }
        }
        
        integrityMonitor.start()
    }
    
    private fun startBehaviorMonitoring() {
        val behaviorMonitor = BehaviorMonitor()
        
        // Monitor suspicious API usage
        behaviorMonitor.addRule(
            BehaviorRule(
                name = "Excessive Permission Requests",
                detector = { context ->
                    val recentRequests = PermissionTracker.getRecentRequests()
                    recentRequests.size > 5 && 
                    recentRequests.distinctBy { it.permission }.size > 3
                },
                action = { context ->
                    securityAnalytics.logAnomaly(
                        "excessive_permission_requests",
                        context.data
                    )
                }
            )
        )
        
        // Monitor data exfiltration attempts
        behaviorMonitor.addRule(
            BehaviorRule(
                name = "Unusual Network Activity",
                detector = { context ->
                    val networkStats = NetworkTracker.getStats()
                    networkStats.uploadBytes > THRESHOLD_BYTES &&
                    networkStats.unusualDestinations > 0
                },
                action = { context ->
                    securityAnalytics.logAnomaly(
                        "potential_data_exfiltration",
                        context.data
                    )
                }
            )
        )
    }
    
    // Real-time threat intelligence integration
    class ThreatIntelligence {
        private val threatFeeds = listOf(
            "https://api.threatintel.example.com/mobile/feed",
            "https://api.security.example.com/indicators"
        )
        
        suspend fun checkAgainstThreatIntel(indicator: Indicator): ThreatAssessment {
            val results = threatFeeds.map { feedUrl ->
                async {
                    queryThreatFeed(feedUrl, indicator)
                }
            }.awaitAll()
            
            return aggregateResults(results)
        }
        
        private suspend fun queryThreatFeed(
            feedUrl: String, 
            indicator: Indicator
        ): ThreatResult {
            // Query threat intelligence feed
            return withContext(Dispatchers.IO) {
                // API call implementation
                ThreatResult(
                    found = false,
                    confidence = 0.0,
                    metadata = emptyMap()
                )
            }
        }
    }
}