This posting is the third in a series that focuses on multicore processing and virtualization, which are becoming ubiquitous in software development. The first blog entry in this series introduced the basic concepts of multicore processing and virtualization, highlighted their benefits, and outlined the challenges these technologies present. The second post addressed multicore processing. This third posting concentrates on virtualization via virtual machines (VMs). Below I define the relevant concepts underlying virtualization via VMs, list its current trends, and examine its pros and cons.
As computers become more powerful and ubiquitous, software and software-based systems are increasingly relied on for business, governmental, and even personal tasks. While many of these devices and apps simply increase the convenience of our lives, some--known as critical systems--perform business- or life-preserving functionality. As they become more prevalent, securing critical systems from accidental and malicious threats has become both more important and more difficult. In addition to classic safety problems, such as ensuring hardware reliability, protection from natural phenomena, etc., modern critical systems are so interconnected that security threats from malicious adversaries must also be considered. This blog post is adapted from a new paper two colleagues (Eugene Vasserman and John Hatcliff, both at Kansas State University) and I wrote that proposes a theoretical basis for simultaneously analyzing both the safety and security of a critical system.
As part of an ongoing effort to keep you informed about our latest work, this blog post summarizes some recently published SEI reports, podcasts and webinars highlighting our work in coordinated vulnerability disclosure, scaling Agile methods, automated testing in Agile environments, ransomware, and Android app analysis. These publications highlight the latest work of SEI technologists in these areas. One SEI Special Report presents data related to DoD software projects and translated it into information that is frequently sought-after across the DoD. This post includes a listing of each publication, author(s), and links where they can be accessed on the SEI website.