Why Traditional WAF is Insufficient？

Traditional WAF relies heavily on rule-based detection methods that utilise Regular Grammar to identify attack patterns. This approach is effective against basic threats but faces significant challenges when dealing with complex attack payloads structured using Context-Sensitive and Context-Free Grammar. These limitations result in:

• False Negatives: Malicious payloads bypass detection due to insufficient pattern coverage or overly strict rule parameters.
• False Positives: Legitimate requests are flagged as threats due to inflexible rule logic, leading to unnecessary disruptions.
• Ambiguous Inferring: Inability to accurately assess intent due to isolated pattern matching, neglecting contextual relationships within the request.