Abnormal Security

Cloud email security platform

Artificial Intelligence
Cyber Security
Cloud Computing

See open opportunities

Company mission

Protecting the modern workforce from the attacks that matter most.



HQ Location

Yerba Buena, San Francisco, CA


Few candidates hear
back within 2 weeks

11% employee growth in 12 months

Otta's take on Abnormal Security

Theo Margolius headshot

Theo Margolius

COO of Otta

Fraud involving impersonation is one of the top causes of online financial crime. Criminal tactics like email account spoofing, where the criminal impersonates an official account to steal personal information or money, are rife. Abnormal Security is a startup aimed at handling these hyper-targeted and personalized email attacks by analyzing communications and identifying potential fraud before it can take place.

The fraud detection space is extreemly competitive but Abnormal Security differentiates itself through its focus on the threat of impersonation rather than a spectrum of threats. This has allowed it to amass a wealth of data relating specifically to high-risk impersonation attacks, analysing over 45,000 signals to detect any anomalies.

Having completed a Series C funding round and achieving a valuation exceeding $4 billion, Abnormal Security plans to double down on developing its product. It will also expand internationally, prioritising markets where a local presence is required due to data security laws.

Total funding - $284m

Last 2 fundraises

Nov 2020



May 2022



This company has top investors

Company benefits

  • The opportunity to be part of a truly special team.
  • A remote-first work policy.
  • Health care
  • Work-from-home stipend
  • Unlimited time off
  • Health and wellness stipend
  • Team-bonding budget


Having started their career as a Software Engineer, co-founded GamerNook.com, Bloomspot, and Adstack before spending 3 years at Twitter. Co-founded Abnormal Security in April 2018, and has been CEO since.

Previously Senior Software Engineer at Twitter and Google. Was also Software Architect at TellApart.

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Abnormal Security is hiring for 17 jobs on Otta!

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Finance, Legal & Compliance