It's not just UAC Kaspersky is unhappy about, though. The firm also complains that PatchGuard, Vista's security system that prevents software from modifying the operating system kernel, is a hindrance to third-party security software. Natalya Kaspersky told ZDNet, "PatchGuard doesn't allow legitimate security vendors to do what we used to do." Kaspersky founder Eugene Kaspersky added that malware writers "don't need to follow regulations or be certified by Microsoft" whereas "antivirus vendors do."
In response to these complaints, Microsoft business security head Arno Edelmann stated, "Kaspersky is one of our best partners . . . I find their statements a little strange because they have one of the best insights into Microsoft security products."