NCSA's Justin Azoff and Alex Withers are co-authors with Illinois graduate student Phuong M. Cao and other Illinois researchers on a paper presented at this year's USENIX Symposium on Networked Systems Design and Implementation (NSDI). The paper describes CAUDIT, an operational system deployed at NCSA that enables the identification and exclusion of hosts that are vulnerable to SSH brute-force attacks. For more information, see the slides and full paper, the NCSA news item, and the GitHub sources.