Red Hat recently reported open-source software now dominates the enterprise. Actually, it does more than that. Another older study found open-source software makes up 80% to 90% of all software. You may not know that, because many of these programs are built on deeply buried open-source components. Now, The Linux Foundation's Core Infrastructure Initiative (CII) and the Laboratory for Innovation Science at Harvard (LISH) have revealed -- in "Vulnerabilities in the Core, a preliminary report and Census II of open-source software" -- the most frequently used components and the vulnerabilities they share.