Bot Traffic Filtering: 25-40% of web traffic is bots and malicious scrapers. Filters: 1) User-Agent filtering (legitimate: Chrome, Firefox, Safari; suspicious: unknown string), 2) Behavioral analysis (bot: single action page-exit, real: multiple pages + scroll), 3) Rate limiting (bot: >100 req/sec, real: 1-2 req/sec), 4) IP reputation (known bot nets: Googlebot, Bingbot whitelist, others block), 5) Challenge-response (CAPTCHA), 6) Fingerprinting (JavaScript execution — bots can disable it). Analytics filtering: Google Analytics (Admin → Data Streams → Bot filtering: enable built-in bot list), 3rd party tools (paid SEO tool, paid SEO tool bot traffic detection). Tech: JavaScript tracking (bots often skip), cookie tracking (bots usually don't accept cookies), honeypot links (links hidden from real users, bots click them). Ad fraud prevention: ad networks (Google Ads, Facebook Ads) have built-in protection (fraud score detection), viewability standards (MRC: Media Rating Council). Metrics to track: Bounce rate (high for bots), Avg session duration (low for bots), Pages per session (low for bots), Unique device fingerprints (bots don't have repeat IDs). Map: analytics bot filter toggle, UTM parameters (mark suspicious traffic), IP block lists (robots.txt + WAF rules).