Sublime Security vs Splunk
Side-by-side comparison of AI visibility scores, market position, and capabilities
DC AI email security with ASA/ADÉ autonomous agents driving 100% ARR growth H1 2025; $240M+ total ($150M Georgian Series C Nov 2025) serving Spotify/Snowflake/Anduril with detection-as-code competing with Abnormal Security for enterprise email thr...
About
Sublime Security is a Washington D.C.-based AI-powered email security platform — backed with $240+ million in total funding including a $150 million Series C in November 2025 led by Georgian with Avenir and 01A — providing enterprise security teams with adaptive email threat detection and autonomous AI agents that protect organizations from phishing, business email compromise (BEC), and advanced email-based attacks. The platform's two autonomous AI agents — ASA (Autonomous Security Analyst) that investigates and triages threats in seconds, and ADÉ (Autonomous Detection Engineer) that deploys tailored detection rules for novel threats in hours — drove 100% ARR growth in the first half of 2025 with 100% enterprise customer retention since inception. Serving Spotify, Snowflake, Zscaler, Anduril, and SentinelOne, Sublime is built on a detection-as-code philosophy using MQL (Message Query Language) for auditable, customizable detection rules. Founded in 2019 by Josh Kamdjou (10 years DoD and private sector red team, where phishing was consistently the fastest network access vector) and Ian Thiel.
Data platform for security and observability acquired by Cisco for $28B in March 2024. Used by 90 of Fortune 100; 7,500+ enterprise customers globally; flagship SIEM and Splunk SOAR power enterprise security operations centers.
About
Splunk is a data platform for security and observability founded in 2003 in San Francisco, built on the idea that machine-generated data — logs, events, metrics, traces — contains the intelligence organizations need to detect threats, investigate incidents, and ensure digital systems stay available. The company's core technology indexes and searches massive volumes of machine data in real time, enabling security and IT operations teams to answer complex questions across their entire data estate without predefined schemas.\n\nSplunk's flagship product is its SIEM (Security Information and Event Management) platform, used by 90 of the Fortune 100 to detect and respond to security threats. Its broader portfolio includes Splunk Observability Cloud for infrastructure monitoring, Splunk SOAR for security orchestration and automated response, and Splunk IT Service Intelligence for IT operations. The platform's schema-on-read approach and SPL query language give analysts flexibility to investigate novel threats and operational issues that structured databases cannot accommodate.\n\nSplunk was acquired by Cisco for $28B in March 2024, one of the largest cybersecurity acquisitions in history, and has been integrated into Cisco's AI-driven security portfolio. The combination of Cisco's network telemetry and global customer relationships with Splunk's data analytics depth creates a powerful full-stack security and observability offering. Under Cisco, Splunk is adding AI-native features — including AI Assistant for SPL and automated threat detection — to maintain its leadership position as the SIEM market evolves toward AI-augmented security operations.
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