The IBM X-Force Threat Intelligence Service (XFTAS) has been changed over to a free service for all and sundry, it used to be e-mail subscription only. Direct security intelligence is captured and circulated via the following:
All you have to do is register a bogus name like an IIRC name, but with a legitimate e-mail address
There is also a Mobile API, if you want to be updated regularly.
The best thing it is entirely free, yes folks for the collaboration of all in the security community - it is free.
Plus you can also use your ID at https://exchange.xforce.ibmcloud.com/
This is about 24 hours behind the Security Intelligence feeds in terms of XFTAS, but if you do a search once logged in you find them under Collections.
Anything to assist the community to collaborate and battle away at the cyber criminals.