Sebastian Schmerl Hartmut König Ulrich Flegel Michael Meier René Rietz Systematic Signature Engineering by Re-use of Snort Signatures. 23-32 2008 ACSAC http://dx.doi.org/10.1109/ACSAC.2008.20 conf/acsac/2008 db/conf/acsac/acsac2008.html#SchmerlKFMR08