Advanced techniques that detect Web 2. 0 threats with a cross-protocol reputation system, real-time assessment (without waiting for a signature), and intent-based anti-malware protection. Standard web defences depend on category-based filtering and signatures to protect users. These worked with Web 1. 0 threats launched from static websites that could easily be categorised and tracked. Because of the subtle vulnerabilities of Web 2. 0 sites, the increased use of encryption, and the deliberate versioning of malware to avoid detection (see also polymorphic virus) (anchor/target link to this location), people using only Web 1. 0-style technologies are not well protected today.