Times have moved on somewhat from the days when all the best information around sits behind expensive paywalls - there are plenty of free resources available, some from vendors, some from the open source community, and some that are search engines for open data.
Subscription sources for threat and security information abound but most sit behind expensive paywalls. So what about free resources? In fact there are a large number of these but only a select few have a track record long enough to stand out as reliable over time.
Here we list some of the industry's definitive reference points for security researchers and the plain curious.