Intel's "Known-Good" Plan
According to Ars Technica, Intel has announced a plan for "known good" restrictions on programs. Only programs from trusted sources would be executable. I’ve written a long essay for the Concurring Opinions legal blog on why this is a very bad idea; rather than recreate it here with all of the links re-added, I’ll just refer everyone to that posting.
https://www.cs.columbia.edu/~smb/blog/2010-09/2010-09-14.html