Our Russian community manager Ilya noticed that members of our Russian forums made an interesting discovery on Microsoft's Russian site. If you open the page with a different browser than IE, you will get a popup ad for Internet Explorer. That's not necessarily wrong in itself, of course. The problem is that they are combining it with false claims about security. …
They seem to be saying that IE is 80% safer than Opera, or that it protects its users against spyware 80% better. This is based on an old and debunked report by NSS Labs.
If you visit the site with Chrome, the claim is perhaps even more exaggerated. It seems to claim that IE8 is better than any other browser at protecting its users from spyware and stolen passwords. Again they rely to NSS Labs and the debunked report they published.
The question is: Why is Microsoft publishing false claims from a report which is based on pseudoscience and manipulated statistics?
If you understand Russian, Ilya has more in Opera's Russian language blog.