The report suggests the accelerated pace may be a big contributor to the increased number of zero-day attacks. The faster these vulnerabilities get patched, the higher the incentive to replace it with a new one. Full details at ARS Technica.
Unsurprisingly, the software suffering the most zero-day attacks last year was Adobe Flash, with a whopping 10 vulnerabilities, or 17 percent of all the 2015 zero days. As checkered as the media player software's reputation is, last year represented an improvement over 2014, which recorded 12 attacks exploiting previously unknown vulnerabilities. (Last week, Adobe fixed a Flash vulnerability that was being exploited to surreptitiously install crypto ransomware on end-user computers.) Microsoft software also sustained 10 zero-day attacks, although they were spread out among a larger portfolio of products, including Windows with six exploits, Internet Explorer with two exploits, and Office with two exploits.