Apparently, malware producers have been able to infilitrate MSN’s banner advertising system, pushing unwanted software to MSN users. Read what is publicly known so far here, at Sandi’s MVP blog. Every second counts when it comes to mitigating cyberattacks and resolving network performance issues, says Sandi. .- .Vulnerable to malware producers. : Malware producers were able to. infilitate MSNs banner. advertising system.”]