Cloudflare has accused Perplexity of using aggressive and stealthy bot tactics to force its crawlers onto websites. The company's Verified Bots Program was compromised when Perplexity failed to obey robots.txt protocols, instead rotating IP addresses from different Autonomous System Numbers (ASNs) to evade blocks. This allowed Perplexity to impersonate browsers like Chrome and change its user agent to bypass attempts to block its crawler.