As much as anything I think this is a problem of Intel being complacent and sticking with what is basically small iterations of the same platform for so long - given enough time you can find obscure (or not so obscure) ways to bypass security in most platforms - if Intel had put more effort into more frequent significant updates some of these architectures would have been rendered so obsolete that security issues would have been of little note.
It often happens with just about anything if it stands still long enough. Some cases more mature products become more secure but even then sometimes it is kind of a bell shaped curve where if they are around long enough things like progress in other areas allows things to be exploited that were previously not feasible to break, etc. etc.
It often happens with just about anything if it stands still long enough. Some cases more mature products become more secure but even then sometimes it is kind of a bell shaped curve where if they are around long enough things like progress in other areas allows things to be exploited that were previously not feasible to break, etc. etc.