Dan Nguyen-Huu

Partner at Decibel Partners | Enterprise Software, AI, Cybersecurity

📍 San Francisco Bay Area, United States🔄 Updated September 2026💼 20 investments📅 10 years investing🗓 Last invested Sep 2024
VC🌍 United States20+ investments
20
Total investments
10
Early stage
6
Mid stage
3
Late stage
10y
Years active

Portfolio

20 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Pre-Seed Investor & Board
Sep 2024
Nebulock is the first agentic threat hunting platform; autonomously surfacing behaviors, not just IOCs, from your existing data. Nebulock acts like a new teammate: a 24/7 AI threat hunter that investigates hypotheses, reasons through your telemetry, and learns from your environment. Whether you’re a two-person SOC or a global enterprise, we scale your threat hunting—and give your team superpowers. Today, threat hunting is broken. Security teams spend weeks chasing alerts, writing detections by hand, and manually validating findings—often just to confirm what their existing tools already flagged. Meanwhile, attackers exploit credentials, move laterally, and operate in silence. Nebulock flips the model. We continuously and autonomously hunt across endpoint, identity, and cloud telemetry—identifying the subtle behavioral signals that point to credential misuse, lateral movement, insider threats, and post-access activity. Then we turn those hunts into hardened, behavior-based detections—automatically. No new agents
No alert regurgitation No workflow disruption Just high-fidelity, explainable findings—delivered directly to your SIEM, API, or Slack.
Seed Investor & Board
Sep 2023
Do your developers ❤️ spending 19% of their day on security? We doubt it. Pixee fixes vulnerabilities, triages scanner findings, hardens code, squashes bugs, and gives engineers + AppSec teams more time to focus on the work that counts.
Seed Investor & Board
Aug 2023
Fixify is a new take on the IT help desk!! We take on the work that’s bogging internal IT teams down using a combination of tech and talented analysts that deliver an IT help desk experience tailored to each company’s environment, workflows and people.
Series A Investor & Board
Jan 2023
SpecterOps provides adversary-focused cybersecurity solutions to help organizations understand how threat actors maneuver against them, so they can successfully defend against advanced attacks. SpecterOps replicates adversary tradecraft, hardens systems against the attack cycle, and helps detect current advanced threat actor activity. Service offerings include internal program development, training courses, independent assessment options, and assessment operations support. With knowledge of the adversary, organizations are empowered to successfully prevent against devastating breaches. Contact us at info@specterops.io.
Seed Investor & Board
Feb 2022
Sublime is the new standard for email security. Not just another black box, our AI-powered detection engine detects and prevents email attacks, so security teams can spend less time on email-originated incidents.
Series A Investor & Board
Aug 2021
Cube is the universal semantic layer that makes it easy to connect data silos, create consistent metrics, and make them accessible to all of your BI tools, customer-facing embedded analytics, as well as LLMs, AI chatbots, and agents. Cube is the company behind the wildly popular Cube open source project and delivers the Enterprise-ready Cube Cloud that includes additional functionality - such as integrations with Power BI, Tableau, and Looker - along with robust developer tools, observability, security, and compliance making it easy to quickly deploy, monitor, and use Cube across any sized business. Companies such as Drift, Cloud Academy, Security Scorecard, Intuit, Walmart and IBM trust Cube to deliver amazing data experiences to their customers and employees. Cube is supported by investors such as Bain Capital and Decibel and is located in San Francisco, CA.
Seed Investor & Board
Oct 2020
runZero delivers the most complete security visibility possible, providing you the ultimate foundation for successfully managing exposures and compliance. Top rated on Gartner Peer Insights, our cyber asset attack surface management (CAASM) platform starts delivering insights in literally minutes, with coverage for both managed and unmanaged devices across the full spectrum of IT, OT, IoT, cloud, mobile, and remote assets. With a world-class NPS score of 82, we have been trusted by more than 30,000 users to improve security since being founded by industry veteran HD Moore, creator of Metasploit. To discover the runZero Platform for yourself, start a free trial today - no credentials, credit cards, or sales calls required!
Series A Investor & Board
Sep 2020
Propelo is an engineering excellence platform that helps increase developer productivity and improve security with data-led insights and workflow automation. Propelo connects your DevOps tools to provide a single view of your software factory, enabling you to remove hidden bottlenecks, move faster and build more secure software.
Board Observer
Dec 2019
In the hyper-connected enterprise, in which every "thing" from IT, IoT, IoMT and OT devices to complex multi-million-dollar cyber physical systems are connected, traditional security solutions simply aren't effective at discovering them and cannot scale to secure them. With Ordr, you can secure every connected asset everywhere with an agentless approach. Ordr delivers granular visibility on every connected asset with granular details such as make, model, serial number, network connectivity and more. Next, Ordr fully profiles device behavior and risks at massive scale, using an integrated IDS and machine learning engine. Finally, Ordr automates action with proactive, reactive and retrospective policies. Ordr is deployed in leading healthcare, manufacturing, financial services, retail and government organizations worldwide to address the following use cases: - real-time asset visibility - vulnerability management - compliance - threat detection and response - IoT and OT security - Zero Trust segmentation - NAC (Cisco ISE and Aruba Clearpass) acceleration Ordr has been selected as the KLAS Healthcare IoT Leader for four years, is a representative vendor in the Gartner Market Guide for CyberPhysical Systems, is in three Gartner Hype Cycles for Cyber Asset Attack Surface Management, and is a representative vendor in the Gartner Market Guide for Medical Device Security Solutions. We have won numerous awards including SInet16, Evanta Innovation Summit, and CRN Tech Innovator 2021. We are funded by Battery Ventures, TenEleven Ventures and Wing Venture Capital, along with Mayo Clinic Ventures and Kaiser Permanente Ventures
Investor
Jun 2019
Matillion is the productivity platform for data teams. Matillion makes data work more productive by empowering the entire data team – coders and non-coders alike – to move, transform, and orchestrate data pipelines faster.
Investor
May 2019
Sumo Logic turns insights into action by enabling customers to deliver reliable and secure cloud-native applications through its Sumo Logic SaaS Log Analytics Platform.
Board Observer
Oct 2018
Paperspace, now part of DigitalOcean, is a high-performance cloud computing and ML development platform for building, training and deploying machine learning models. Tens of thousands of individuals, startups, and enterprises use Paperspace to iterate faster and collaborate on intelligent, real-time prediction engines. To learn more about Paperspace, please visit paperspace.com or follow us on Twitter twitter.com/hellopaperspace Mission Our mission is to make cloud computing more accessible through radical simplicity, community-driven technical resources, and straightforward pricing.
Investor
Apr 2018
Sensu, a Sumo Logic company, is the creator and maintainer of Sensu, the open source monitoring event pipeline. Sensu empowers businesses to automate their monitoring workflow and gain deep visibility into their infrastructure, applications, and operations. Backed by one of the largest open source communities in monitoring, companies like Netflix, General Electric, and the Associated Press rely on Sensu to help them deliver value to their customers faster, at larger scale. Sensu maintains the free and open source Sensu Core framework as well as the commercially supported Sensu Enterprise, which offers enhanced features to simplify operations and governance, with multi-cloud support for monitoring at scale. For more information, follow @sensu on Twitter or visit https://sensu.io.
Board Observer
Sep 2017
Contrast Security is the world’s leader in Runtime Application Security, embedding code analysis and attack prevention directly into software. Contrast’s patented security instrumentation disrupts traditional AppSec approaches with integrated and comprehensive security observability that delivers highly accurate assessment and continuous protection of an entire application portfolio. The Contrast Runtime Security Platform enables powerful Application Security Testing and Application Detection and Response, allowing developers, AppSec teams, and SecOps teams to better protect and defend their applications against the ever-evolving threat landscape. Application Security programs need to modernize and Contrast empowers teams to innovate with confidence.
Investor
Aug 2017
Databricks is the Data and AI company. More than 20,000 organizations worldwide — including adidas, AT&T, Bayer, Block, Mastercard, Rivian, Unilever, and over 60% of the Fortune 500 — rely on Databricks to build and scale data and AI apps, analytics and agents. Headquartered in San Francisco with 30+ offices around the globe, Databricks offers a unified Data Intelligence Platform that includes Agent Bricks, Lakeflow, Lakehouse, Lakebase and Unity Catalog. --- Databricks applicants Please apply through our official Careers page at databricks.com/company/careers. All official communication from Databricks will come from email addresses ending with @databricks.com or @goodtime.io (our meeting tool).
Show all 20 investments ↓
Experience · 23 entries
All (23)
Investments (20)
Board (5)
2024
Pre-Seed Investor & Board
Sep 2024
Nebulock is the first agentic threat hunting platform; autonomously surfacing behaviors, not just IOCs, from your existing data. Nebulock acts like a new teammate: a 24/7 AI threat hunter that investigates hypotheses, reasons through your telemetry, and learns from your environment. Whether you’re a two-person SOC or a global enterprise, we scale your threat hunting—and give your team superpowers. Today, threat hunting is broken. Security teams spend weeks chasing alerts, writing detections by hand, and manually validating findings—often just to confirm what their existing tools already flagged. Meanwhile, attackers exploit credentials, move laterally, and operate in silence. Nebulock flips the model. We continuously and autonomously hunt across endpoint, identity, and cloud telemetry—identifying the subtle behavioral signals that point to credential misuse, lateral movement, insider threats, and post-access activity. Then we turn those hunts into hardened, behavior-based detections—automatically. No new agents
No alert regurgitation No workflow disruption Just high-fidelity, explainable findings—delivered directly to your SIEM, API, or Slack.
2023
Seed Investor & Board
Sep 2023
Do your developers ❤️ spending 19% of their day on security? We doubt it. Pixee fixes vulnerabilities, triages scanner findings, hardens code, squashes bugs, and gives engineers + AppSec teams more time to focus on the work that counts.
Seed Investor & Board
Aug 2023
Fixify is a new take on the IT help desk!! We take on the work that’s bogging internal IT teams down using a combination of tech and talented analysts that deliver an IT help desk experience tailored to each company’s environment, workflows and people.
Series A Investor & Board
Jan 2023
SpecterOps provides adversary-focused cybersecurity solutions to help organizations understand how threat actors maneuver against them, so they can successfully defend against advanced attacks. SpecterOps replicates adversary tradecraft, hardens systems against the attack cycle, and helps detect current advanced threat actor activity. Service offerings include internal program development, training courses, independent assessment options, and assessment operations support. With knowledge of the adversary, organizations are empowered to successfully prevent against devastating breaches. Contact us at info@specterops.io.
2022
Seed Investor & Board
Feb 2022
Sublime is the new standard for email security. Not just another black box, our AI-powered detection engine detects and prevents email attacks, so security teams can spend less time on email-originated incidents.
Show all 23 entries ↓
Investment activity
2016–2024 · 20 investments
201632017420182201932020220211202212023320241
Recent (last 2 years)Earlier