Kaspersky Anti-Spam SDK 6.0 is a software development kit that enables integration of anti-spam and anti-phishing technologies into email and messaging solutions. The SDK combines automated detection methods with human analysis to identify and block spam and phishing attacks. The product uses a hybrid approach that combines cloud-based intelligence from Kaspersky Security Network with on-premise detection technologies. The cloud component leverages data from hundreds of millions of users to identify new spam messages within seconds and distribute signatures through regular updates. The SDK includes multiple detection layers and filters for identifying various types of spam. It features IP reputation technology that operates entirely in the cloud to detect spam based on sender IP addresses before applying more resource-intensive detection methods. The product also includes anti-phishing heuristics for identifying phishing attempts. The SDK supports processing messages in any language and provides native 64-bit support across standard platforms and mail transfer agents. It offers HTTP service mode for client/server architecture and supports multithread processing capable of handling hundreds of messages per thread. The API is designed to be cross-platform compatible across Unix and Windows systems without requiring code changes. Updates are delivered automatically and can be applied without manual intervention. The SDK includes libraries, code samples, and documentation to facilitate integration into existing messaging solutions.