# Martin Roesch

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American computer security developer and business leader

Roesch in 2022

Martin is the original author and lead developer of the [Snort](/source/Snort_(software)) Intrusion Detection and Prevention System [1], a pioneering Open Source Software project released in 1998 that rapidly became the global standard for network-based attack definition and detection.

In January 2001, Roesch founded a company he named [Sourcefire](/source/Sourcefire) that used Snort as the foundation for the Sourcefire Next Generation Firewall and IDS/IPS systems. He was the CEO from inception until May 2002, then CTO until June 2012, when he returned to the CEO role until the company was acquired by [Cisco Systems](/source/Cisco) on October 7, 2013 for $2.7B.[2]

He served as the Chief Architect of the Security Business Group at Cisco until February 2019[3], leading efforts around security strategy, architecture, and acquisitions.

After a hiatus, Roesch returned to startups, joining Netography [4] as its CEO in August 2021. He led the company through its $45M Series A in November 2021[5] and remained CEO until Netography was acquired by [Vectra AI](/source/Vectra_AI) in 2025.[6]

## References

1. **[^](#cite_ref-1)** ["So, What Is Snort? | An Introduction to Snort: A Lightweight Intrusion Detection System"](https://www.informit.com/articles/article.aspx?p=21778&seqNum=4). *www.informit.com*. Retrieved 2023-01-13.

1. **[^](#cite_ref-2)** Rao, Leena (2013-07-23). ["Cisco Acquires Cybersecurity Company Sourcefire For $2.7B"](https://techcrunch.com/2013/07/23/cisco-acquires-cybersecurity-company-sourcefire-for-2-7b/). *TechCrunch*. Retrieved 2023-01-13.

1. **[^](#cite_ref-3)** Narcisi, Gina. ["Cisco Security Exec And Sourcefire Founder Martin Roesch Is Departing | CRN"](http://web.archive.org/web/20241108060911/https://www.crn.com/news/networking/cisco-security-exec-and-sourcefire-founder-martin-roesch-is-departing). *www.crn.com*. Archived from [the original](https://www.crn.com/news/networking/cisco-security-exec-and-sourcefire-founder-martin-roesch-is-departing) on 2024-11-08. Retrieved 2025-12-09.

1. **[^](#cite_ref-4)** ["Netography Website"](https://netography.com/).

1. **[^](#cite_ref-5)** ["Netography raises $45M Series A funding to provide real-time threat detection and response capabilities for the atomized network"](https://techstartups.com/2021/11/15/netography-raises-45m-series-funding-provide-real-time-threat-detection-response-capabilities-atomized-network/). *Tech News*. 2021-11-15. Retrieved 2023-01-13.

1. **[^](#cite_ref-6)** Novinson, Michael (2013-02-10). ["Vectra AI Snaps Up Netography to Fortify Multi-Cloud Muscle"](https://www.bankinfosecurity.com/vectra-ai-snaps-up-netography-to-fortify-multi-cloud-muscle-a-29609). *BankInfoSecurity*.

## External links

- [Security Conversations "Down Memory Lane with Snort and Sourcefire Creator Marty Roesch"](https://securityconversations.com/episode/down-memory-lane-with-snort-and-sourcefire-creator-marty-roesch/)

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Adapted from the Wikipedia article [Martin Roesch](https://en.wikipedia.org/wiki/Martin_Roesch) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Martin_Roesch?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.