Computer viruses are making a comeback, according to Microsoft’s Director of Trustworthy Computing – with numbers rising globally in 2012. Tim Rains says that for several years, viruses have been “out of favour with attackers”, but points to statistics showing that they have made a comeback in 2012, at least in certain territories.
Our white paper on Potentially Unwanted Applications (PUAs) has been revised with additional information, including information about how legitimate software can become classified as a PUA due to its misuse, a discussion of a type of downloader called a software wrapper and updated screen shots. It can be found in the White Papers section Problematic,
[Update: Michael St Nietzel also pointed out that there's an issue with installers that verify a checksum before installation. In fact, this is a special case of an issue I may not have made completely clear before: unless this approach is combined with some form of whitelisting, there has to be some way of reversing the modification