About US

Who is SIEMonster and why have we built this?

Kustodian is a global security company that specializes in Security Operations Centre (SOC) monitoring, architecture and penetration testing. Kustodian has been operation for over 12 years with offices around the world.

Kustodian was given the brief to develop an Open Source SIEM for an International client with offices around the world with over 20,000 seats. The client did not want to be locked into license, support fees, node or data limitations. The client also wanted to integrate vulnerability scanning into a risk dashboard instead of reading flat scanning reports.

Kustodian is experienced in commercial SIEM offerings like Splunk ES and ArcSight and welcomed the challenge to build something with only open source, no licensing software. Kustodian successfully developed and deployed the open source SIEM, SIEMonster for that client in 2015. With that success, other enterprise companies started jumping on board and requested we implement it for them as well.

SIEMonster was born and is now operational in most countries. SIEMonster is now releasing that development to the Information Security community for their own organizations and help develop the product further so it continues to remain a viable alternative to commercial SIEM’s. SIEMonster are fully committed to the project and are only offering open source SIEM monitoring for its own SOC’s and clients. See more here..

The CEO and founder, Chris Rock has been an active participant in the Information Security industry for 20 years and recently presented at DEFCON in 2015, 2016 and Blackhat Arsenal 2016.


Australia Office:
Level 50 / 120 Collins Street
Melbourne, Australia 3000

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Kingdom of Bahrain Office:
Al Moayyed Tower
Seef District, Bahrain
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Hong Kong Office:
Unit 903A, 9th Floor
Yue Xiu Building
160-174 Lockhart Road
Wanchai, Hong Kong
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USA Office:
Suite 2710
101 California Street
San Francisco 94111
Phone: 415 365 9635
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