AWS WAF Bot Control now supports Web Bot Authentication (WBA) to verify legitimate AI agent traffic using cryptographic signatures. This method enhances security by distinguishing approved bot traffic from malicious attempts, crucial for multi-tenant environments like Amazon Bedrock AgentCore.
As AI agents increasingly access web applications, distinguishing between legitimate and malicious traffic is essential for security. Traditional methods, such as IP filtering and DNS lookups, have proven ineffective in multi-tenant systems where multiple workloads share the same IP space. The introduction of Web Bot Authentication (WBA) in AWS WAF Bot Control aims to address this challenge.
WBA implements cryptographic signatures that verify bot identities. It employs asymmetric cryptography to ensure that automated requests can be authenticated securely. The process consists of registering public keys, signing requests with private keys, and verifying these signatures against a maintained registry of public keys.
Bot operators publish their public keys in a signature directory, accessible to AWS WAF, which regularly polls these directories. Requests from bots are signed according to the IETF standard, HTTP Message Signatures (RFC 9421), enabling reliable verification. AWS WAF appends relevant labels to requests based on verification status, facilitating more straightforward security management.
With WBA, web application operators can confidently manage trusted automated access while ensuring security protocols are followed. The system allows for granular control and scalability, as verified traffic is automatically allowed, reducing the need for manual allowlists and enhancing the management of bot interactions on platforms like Amazon Bedrock.
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AWS WAF Bot Control now supports Web Bot Authentication (WBA) to verify legitimate AI agent traffic using cryptographic signatures. This method enhances security by distinguishing approved bot traffic from malicious attempts, crucial for multi-tenant environments like Amazon Bedrock AgentCore.