The Mandiant Mafia
9 people came through Mandiant and went on to found or lead other companies.
Kristo KäärmannSenior ManagerFounded TransferWise +2Jason MellerProduct ManagerFounded Threat Stack +1Brandon ArvanaghiSecurity ConsultantFounded Meow +1Kevin MandiaFounderFounded FireEyeDave DeWaltChairmanFounded FireEyeMarshall HeilmanVP & CTO, Incident Response and Red Team OperationsFounded DTEXDave MerkelVice President, Products and Threat Management ServicesFounded ExpelYanek KorffVice President, Managed Defense (FireEye as a Service)Founded ExpelSeth SummersettPrincipal ConsultantFounded Embed Security
Frequently asked questions
- What is the Mandiant mafia?
- The Mandiant mafia is the network of 9 people who came through Mandiant and went on to found or lead other companies, including TransferWise, Threat Stack, Meow, FireEye, DTEX.
- Who is in the Mandiant mafia?
- Notable members include Kristo Käärmann (TransferWise), Jason Meller (Threat Stack), Brandon Arvanaghi (Meow), Kevin Mandia (FireEye), Dave DeWalt (FireEye), Marshall Heilman (DTEX), Dave Merkel (Expel), Yanek Korff (Expel), among 9 tracked members.
- What companies did Mandiant alumni found?
- Companies founded by Mandiant alumni include TransferWise, Threat Stack, Meow, FireEye, DTEX, Expel, Embed Security.







