Artemis, a cybersecurity startup led by veterans from AWS and Abnormal Security, recently secured $70 million in Series A funding to address the collapsing "time-to-exploit" window in modern breaches. The round, led by Felicis with participation from First Round Capital, was first detailed in a Fortune exclusive. It marks one of the most significant early-stage bets on autonomous defense as traditional, rule-based systems struggle to contain machine-speed attacks.
Founded six months ago by CEO Shachar Hirshberg (AWS) and CTO Dan Shiebler (Abnormal Security), Artemis is positioned as a sophisticated alternative to legacy logging tools like Splunk. Its strategic mandate is to replace fragmented security stacks with a centralized "brain" that monitors cloud activity and log-ins in real-time. By establishing a baseline of "normal" behavior, the platform identifies anomalies and can automatically execute remediation protocols, such as locking compromised accounts, before an attacker can move laterally.
With a client roster already including Mercury, Wix, and Lemonade, Artemis is targeting multi-million dollar revenue by the end of 2026. The firm’s emergence comes as Anthropic and other AI labs demonstrate how automation can identify software vulnerabilities faster than humans can patch them—a gap Artemis intends to bridge by shifting the industry from passive monitoring to active, AI-driven reasoning.
