Many open-source and commercial security rulesets (such as Snort, Suricata, or ModSecurity) contain static signatures designed to look for the string 169.254.169.254 . The specific format you provided is often how a payload is cataloged in a threat intelligence database or a vulnerability definition file. 5. Security Best Practices for IMDS
The Hidden Gateway: Analyzing Security Implications of IMDSv2 and the curl Token Endpoint curl-url-http-3A-2F-2F169.254.169.254-2Flatest-2Fapi-2Ftoken
By requiring a session token, AWS adds a layer of defense against: : Preventing accidental exposure. Many open-source and commercial security rulesets (such as