Security Startups
← All categories

Detection and response

Independent XDR, MDR, and detection-engineering startups. Not the public mega-cap EDR floor.

14 companies. Catalog last reviewed 2026-08-23. Page copy reviewed 2026-08-23. Next review by 2026-09-23. Ordered by name. No paid placement.

This is the live catalog slice for the Detection and response category. A company appears here only when its primary category matches, and every entry carries a 2024 to 2026 proof-of-life signal recorded with a source link. A full page-unique intro for this category ships in a later polish pass.

How order works. Listings are the full live catalog slice for this primary category, sorted alphabetically by name. This is not a scored quality ranking and there is no paid placement. Aevral is a disclosed house listing under the same rules (coming soon, no pin). See /transparency.

7AI

Boston, USA

Series A

Swarming AI agents that take over the investigation work human SOCs cannot staff.

Raised $130M Series A led by Index Ventures, December 2025

Detection and response$166M raisedFounded 2024

Arctic Wolf

Eden Prairie, USA

Series F

Concierge MDR on the Aurora platform, now with its own endpoint prevention.

Launched Aurora Endpoint Security and acquired Cylance from BlackBerry in 2025

Detection and response$900M raisedFounded 2012

Conifers

Dallas, USA

Series A

MSSP-first agentic SOC that wires intel, hunting, detections, investigation, and response into one loop.

Raised $25M Series A led by SYN Ventures, January 2025

Detection and response$25M raisedFounded 2024

Dropzone AI

Seattle, USA

Series B

Software-only AI SOC analyst that investigates alerts without a managed service attached.

Raised $37M Series B led by Theory Ventures, July 2025

Detection and response$57M raisedFounded 2023

Exaforce

San Jose, USA

Series B

Real-time knowledge graph plus Exabot agents that investigate and stop attacks as they happen.

Raised $125M Series B at a $725M valuation, May 2026

Detection and response$200M raisedFounded 2023

Expel

Herndon, USA

Series E

Vendor-agnostic MDR that works on the SIEM and EDR you already bought.

Launched MDR coverage for the full AI attack surface, August 2026

Detection and response$289M raisedFounded 2016

Huntress

Columbia, USA

Series D

Managed EDR, identity, and SIEM for businesses that do not run a 24/7 SOC.

Surpassed $250M ARR and 270,000 businesses protected, July 2026

Detection and response$300M raisedFounded 2015

Intezer

New York, USA

Series C

Forensic-grade AI SOC that investigates 100% of alerts, including the low-severity ones MDR skips.

Expanded AI SOC platform for teams outgrowing MDR, March 2026

Detection and response$60M raisedFounded 2016

Prophet Security

Menlo Park, USA

Series A

Agentic SOC platform covering investigation, hunting, and detection engineering in one mesh.

Raised $30M Series A led by Accel, July 2025

Detection and response$41M raisedFounded 2023

Qevlar AI

Paris, France

Series A

European agentic SOC that turns every alert investigation into posture insight.

Raised $30M co-led by Partech and Forgepoint Capital International, March 2026

Detection and response$45M raisedFounded 2023

Simbian

Mountain View, USA

Seed

Self-improving AI SOC that unifies defense, hunting, and offense on one agent family.

Named to the CB Insights AI 100, May 2026, after 15x customer growth in 2025

Detection and response$10.5M raisedFounded 2023

TENEX.AI

Sarasota, USA

Series B

AI-native MDR that triages every alert in under a minute, with humans on the loop.

Raised $250M Series B led by Crosspoint, March 2026

Detection and response$277M raisedFounded 2024

Tines

Dublin, Ireland

Series C

Workflow automation that security teams actually own, now with agentic AI on top.

Raised $125M Series C at a $1.13B valuation, February 2025

Detection and response$271M raisedFounded 2018

Torq

Tel Aviv, Israel

Series D

Hyperautomation platform turning SOAR playbooks into an agentic SOC.

Raised $140M Series D at a $1.2B valuation, January 2026

Detection and response$332M raisedFounded 2020