Ask AI: How did the 9/11 terrorists’ Internet use go undetected?

The 9/11 terrorists used the Internet in ways that went largely undetected by authorities. They used social media, email, and file sharing services to communicate, coordinate, and plan their attacks. They also made use of more dangerous methods of communication such as encrypted messaging and virtual private networks (VPNs) to mask their identities. They also used pseudonyms and aliases and frequenting online forums and chatrooms where they could discuss their plans without being easily identified. Finally, they ensured their web traffic was routed through other countries, making it difficult for authorities to determine their true location and activities.