Add or Remove Programs entry for Sicherheitsupdate für Windows XP (KB890046). This is a security update for Windows XP that addresses a vulnerability in the Microsoft Agent that could allow spoofing.
This is a spoofing vulnerability that exists in the affected products and that could enable an attacker to spoof trusted Internet content. Users could believe that they are accessing trusted Internet content. However, they are accessing malicious Internet content such as a malicious Web site. An attacker would first have to persuade a user to visit the attacker’s site to attempt to exploit this vulnerability.