other than ec2 from amazon, no thought seems to be given at this point to security. suprisingly not even mbed for arm's cortex m0. nothing in book i read, nor online at mbed except for three questions from potential users in the sites forum: one a year ago and two others three years ago. no response to their queries. but that does not mean that mbed did not insitute security. but no indication on the site about that.
cloud services still pretty crappy and uneven not only about reliability but security as well.