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Filter Types (Content, Reputation, AI)

The "tools" the harbor patrol uses. This section defines the different types of filters, from "old-school" content filters (looking for "spammy words") to modern reputation filters (IP/domain) and AI-driven filters (that learn what you think is spam).

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Questions about Filter Types (Content, Reputation, AI)

What is content-based spam filtering? What is reputation-based spam filtering? How does AI and machine learning play a role in spam filtering? What are heuristic filters? What are gateway spam filters? What are hosted filters (Microsoft, Google, etc.)? What is a cloud filtering service (Proofpoint, Mimecast, Barracuda)? What are local or desktop filters (Outlook, Apple Mail, Thunderbird)? What are corporate filters vs consumer filters? How do enterprise firewalls handle bulk senders differently? What are content filters vs policy filters vs reputation filters? What are language or region-specific spam filters? What are phishing detection filters and how do they differ from spam? How do AI-based filters (TensorFlow, Microsoft SmartScreen) operate?