This is definitely a "B" -- on the strong side of that category. (Perhaps nobody bothered to produce evidence that it's "international" in time for the CORE 2014 determinations?) http://link.springer.com/book/10.1007%2F978-3-319-19962-7, first paper: three authors from Beijing. Last paper: a very strong contribution (10.1007/978-3-319-19962-7_28) from Daniel Bernstein (UIUC, TU Eindhoven) and three other authors from TU Eindhoven. I'll be reading this one carefully -- I hadn't run across it before -- and will then contact Dan to discuss -- all of which is to say that this long-standing conference (http://dblp.uni-trier.de/db/conf/acisp/index.html) is definitely having a significant "international" impact in 2016. Guifei Gu has been doing a careful job of tracking computer security conferences for many years, see http://faculty.cs.tamu.edu/guofei/sec_conf_stat.htm, he puts ACISP at #22 of approx 40 that are worthy of any attention. The scientometric heuristics of http://academic.research.microsoft.com/RankList?entitytype=3&topDomainID=2&subDomainID=2 agree with Gu -- this is a top-20ish international conference in a filed with approx 138 international conferences (many of which are *not* worthy of any attention by a scholarly researcher ;-) I'm not answering the questions below because I don't have direct experience with the conference, but I'll raise this page to the attention of the organising ctte -- they may not have noticed the de-ranking by CORE 2014, or maybe they don't think it's worth their time to provide evidence in time for some future CORE ranking?

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