In today’s enterprise security operations, defenders struggle under the weight of fragmented tools and data. Organizations spend over $200 billion annually on best-of-breed security products, yet security effectiveness has not kept pace with investment: less than half of breaches are detected by internal tools, and the majority of the breaches are considered preventable. This disconnect reflects a structural gap between visibility and execution. As a result, Gartner has recognized Cybersecurity Mesh Architecture (CSMA) as the prevailing architectural direction, signaling a shift away from isolated point solutions toward integrated, interoperable security systems.
Why Mesh Security Matters Now: From Siloed Tools to Unified Systems
Over the past decade, enterprises have rapidly expanded their security stacks, deploying specialized tools across endpoints, identity, cloud, data, networks, CI/CD, and more. While individual tools may excel within their respective domains, security outcomes at the system level have not improved accordingly. Today, the average enterprise operates 40+ security tools across 20+ vendors, resulting in fragmented visibility, disjointed operations, and persistent blind spots. In this environment, no single product or team can see the full picture, and attackers only need to exploit the gaps between tools.
Security leaders and boards are reaching a breaking point. Years of unchecked tool proliferation and steadily expanding security budgets have failed to deliver proportional reductions in risk, leaving organizations with growing complexity but diminishing returns. CISO’s end executive teams are starting to recognize that integration, not additional point solutions, is the path to a meaningful risk reduction. Organizations adopting a cybersecurity mesh approach can reduce the financial impact of security incidents by up to 90%, accelerating CSMA’s shift from conceptual framework to board-level priority. The market reflects this urgency: the CSMA category is projected to grow at over 20% CAGR, driven by demand for solutions that can unify fragmented defenses.
In practice, realizing a true cybersecurity mesh remains a significant challenge. Execution requires a new layer of technology capable of bridging domains, vendors, and environments without disrupting existing investments. This is where Mesh Security comes in. Mesh serves as the execution layer that operationalizes CSMA in real-world enterprise environments. Rather than replacing existing tools, Mesh connects them, unifying previously siloed security controls into a single coordinated system. The result is cross-domain visibility and control spanning cloud and on-prem environments, business units, and security vendors, without rip-and-replace.
Continuous Agentless Posture Management & Zero Trust Enforcement
By leveraging APIs and native integrations, Mesh discovers and correlates assets across cloud services, SaaS applications, on-prem systems, identities, and devices, maintaining a living inventory of the organization’s security posture without deploying agents or appliances. From this unified vantage point, Mesh enables continuous posture management, identifying misconfigurations, policy drift, over-privileged access, and other sources of implicit trust as they emerge. For example, Mesh can surface when a critical workload is launched with insecure defaults or when an identity accumulates excessive permissions, flagging these issues against Zero Trust principles in real time.
Mesh goes beyond visibility to automated execution. The platform continuously evaluates behavior and configuration changes for policy violations or anomalous activity and can respond autonomously by triggering defensive actions across integrated tools (e.g., locking accounts, adjusting policies, isolating workloads). Depending on the scenario, Mesh can remediate issues directly or recommend targeted actions, such as tightening identity permissions, enforcing MFA, or segmenting sensitive resources. These controls are enforced centrally, through Mesh’s execution layer, without disrupting existing tooling or workflows.
In practice, security teams gain a single operational view of their security posture along with the ability to enforce consistent policies across environments and vendors. Gaps that would typically persist between siloed products are surfaced and addressed systematically. As one early customer noted, Mesh “helps identify the critical gaps that actually matter and drives the process of closing them… it’s designed to make the security stack work as one system.” Mesh’s integrated, agentless approach enables organizations to move from passively observing risk to actively eliminating exposure across the enterprise.
Taken together, these outcomes point to something larger than incremental security improvement. They reflect a shift from fragmented tooling toward system-level security execution where visibility, control, and enforcement operate in concert rather than in isolation. This shift defines the direction modern security must take.
At SentinelOne, we have long believed that security should operate as a seamless, autonomous system capable of operating at machine speed. That conviction underpins S Ventures’ investment in Mesh Security, alongside Lobby Capital and Bright Pixel, as part of the company’s $12M Series A. We believe this is the right investment at the right time: enterprises are reaching the limits of tool-centric security, boards are demanding measurable risk reduction, and CSMA has emerged as the industry’s architectural direction, but execution has lagged. Mesh is delivering the missing execution layer for CSMA, unifying visibility, continuous posture management, and automated Zero Trust enforcement across cloud, SaaS, and on-prem environments without disrupting existing investments. By enabling enterprises to operate their existing security investments as a single, interoperable system, Mesh is redefining how modern security programs execute. We are excited to support the Mesh team as they advance their mission to reduce exposure through autonomy, integration, and system-level security execution.