Emerging Threats is an open source community project now backed by Emerging Threats Pro. Through the support of our community we are able to produce the fastest moving and most diverse Suricata and Snort Rulesets and firewall rules available.
Our Open content is free to use by any user or organization, commercial or private. We only ask that when you detect new threats in your environment or write new rules suitable for public release that you share that intelligence with the community at large through our mailing lists, or directly at This e-mail address is being protected from spambots. You need JavaScript enabled to view it . We update these rulesets as new information surfaces (usually several times a day 7 days a week) and highly recommend you update at least twice a week to stay up to date. Daily is your best bet. A commercial full coverage ruleset is also available which is based upon this open ruleset, visit Emerging Threats Pro for more information. Subscriptions to the Emerging Threats Pro ruleset help support this project and many others.
Keeping up to date is best done by subscribing to our ET Open Mailing Lists and the ET Pro Mailing Lists, Joining us in #emerging-threats in IRC on freenode, or following the Emerging Threats Blog. In the future all posts will generally be done on the blog as there are better tools available to follow there.
Emerging Threats has been in operation under several names since early 2003. We were formed originally as Bleeding Snort, but had to remove Snort from our name several years later for trademark issues. We then became Bleeding Threats. That project had to be abandoned and is defunct unfortunately because of some possible license conflicts that appeared to be arising, so the entire ruleset was moved here, to Emerging Threats. In 2008 we received grant funding from the Army Research Office and the National Science Foundation to continue this project and research. In 2010 Emerging Threats Pro was formed to support this project and offer a complete premium ruleset.
Emerging Threats exists because of the contributions of intelligence and signatures by the community. We give great thanks to the individuals and organizations that have contributed, supported, and made this project possible!
You can download our rulesets here, view our Documentation Wiki, or browse some of the other excellent projects that have found a home here.
We exist because of the community. These are your rules!
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