Callback-url-http-3a-2f-2f169.254.169.254-2flatest-2fmeta Data-2fiam-2fsecurity Credentials-2f Jun 2026

It is a URL-encoded string. It targets cloud servers. Hackers use it to steal secret keys. Decoding the URL

The first request to that URL may be a test. The second is a takeover. It is a URL-encoded string

: The attacker uses these credentials on their own machine to gain the same permissions as the cloud server, potentially leading to a full account takeover. Defensive Measures It is a URL-encoded string

Understanding and Securing the AWS Metadata Service: http://169.254.169.254/latest/meta-data/iam/security-credentials/ It is a URL-encoded string

The callback URL is designed with security in mind:

: Because the request originates from within the cloud instance, the cloud metadata service trusts it implicitly under older protocols. It responds with the names of active IAM profiles.