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  • Doppel PlatformAI-powered social engineering defense platform
  • Social Engineering DefenseUnify your defense across the attack chain
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    From Weeks to Minutes:
Why ARK Invest Chose Doppel to Automate Social Engineering Defense

    From Weeks to Minutes:
Why ARK Invest Chose Doppel to Automate Social Engineering Defense

    Discover how ARK Invest cut scam takedown times from weeks to minutes and reduced impersonation volume by 50% year-over-year.

    REA Group Protects its Brands and Reputation with Social Engineering Defense

    REA Group Protects its Brands and Reputation with Social Engineering Defense

    REA Group uses Doppel to detect impersonation threats, automate takedowns, and protect its brands and millions of consumers.

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    Featured
    Email Security

    Doppel Email Security is now generally available

    The agentic email security solution that empowers you to fight back against social engineering attacks. Detection isn't enough. Disruption is the difference.

    Read the press
    • Platform

      Platform

      Platform Overview
      • Doppel PlatformAI-powered social engineering defense platform
      • Social Engineering DefenseUnify your defense across the attack chain
      • IntegrationsSee our integrations partners
      Digital Risk Protection
      • Brand ProtectionDismantle threats and protect your brand's reputation
      • Executive ProtectionPrevent impersonation, phishing, and identity-based attacks
      Human Risk Management
      • SimulationStrengthen your business against social engineering attacks
      • Security Awareness TrainingTrain your teams, build resilience
      Email Security
      • Email SecurityFight back against phishing attacks
      • Phishing TriageStrengthen phishing defense across your workforce and SOC
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      • About usLearn about Doppel's mission and vision
      • LeadershipMeet the leaders behind Doppel
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    • Applied Cyber Experts
    • Indy Mellink

    Social engineering simulations

    Indy Mellink

    Human Risk Management Lead

    Indy leads Doppel’s Applied Cyber Human Risk Management team, overseeing the quality, realism, and operational delivery of its social engineering simulations.

    Indy Mellink, Human Risk Management Lead

    About

    Indy partners with Product and Engineering to translate emerging adversary tactics, behavioral science, and frontline practitioner expertise into scalable simulations and AI-driven product capabilities.

    Before joining Doppel, Indy led cybersecurity awareness and social engineering programs at a leading cybersecurity organization, managing a team that conducted attack simulations for public- and private-sector organizations. She also holds a PhD in neuroscience, giving her a distinctive perspective on human behavior, decision-making, and how people respond under pressure. Her work extended beyond identifying human risk to building and implementing awareness programs that helped organizations develop lasting resilience against social engineering attacks.

    Indy combines her expertise in neuroscience, forensic psychology, and security operations to turn behavioral insights into realistic scenarios, evaluation criteria, and feedback loops. This work helps Doppel’s AI agents model credible attacker behavior, measure human risk, and determine whether employees recognize, resist, and report sophisticated social engineering attacks.

    Badges: DEF CON 32 vishing competitor; invited speaker at HackMiami, One Conference, and DeepSec.

    Related experts

    Carter Zupancich, Human Risk Management Leader

    Human Risk Management

    Carter Zupancich

    Human Risk Management Leader

    Read profile
    IH

    Deepfakes and synthetic media

    Isaac Hathaway

    Human Risk Management Practitioner

    Read profile
    Shelby Dacko, Human Risk Management Practitioner

    Vishing and social engineering

    Shelby Dacko

    Human Risk Management Practitioner

    Read profile
    Meet the full Applied Cyber team

    Put Applied Cyber expertise behind your defense.

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