Mei, a forensic analyst, is analyzing logs from a compromised blog platform.

The EC-Council Incident Handler (ECIH) curriculum explains that Stored Cross-Site Scripting (Stored XSS) occurs when malicious scripts are permanently stored on a web server (e.g., within blog posts, comments, or database entries). When users access the infected content, the malicious script executes in their browser.

In this scenario, the attacker posted malicious content using a valid account, and subsequent users were redirected to a phishing site containing session cookies in the URL. This indicates that malicious code was embedded and stored within the blog platform, affecting multiple visitors.

Reflected XSS (Option A) requires the victim to click a crafted link and is not persistently stored. Man-in-the-middle (Option B) involves interception of communications. Directory traversal (Option D) involves accessing restricted directories on a server.

ECIH highlights that stored XSS attacks are particularly dangerous because they impact all users who access the compromised content and can lead to session hijacking, credential theft, and redirection to phishing sites.

Therefore, the attack described is Stored XSS.