10 Best Security Monitoring Tools in 2026

Resolver offers a cloud-based Risk Intelligence Platform designed to help organizations identify, prioritize, and resolve risks across various domains. It provides comprehensive solutions for enterprise risk management, internal audit, compliance, enterprise security, investigations, brand equity protection, and platform trust & safety. By gathering and analyzing all risk data in context, Resolver reveals the true business impact of risks, allowing customers to communicate them persuasively and transform risk management into a strategic business partner. The platform is built to help organizations enhance crisis preparedness, protect revenue by averting risk events, and boost brand reputation by demonstrating strong risk management. It serves over 1,000 global organizations, safeguarding their employees, customers, supply chain, brand, and shareholders. Resolver leverages AI combined with deep human expertise, including OSINT researchers, linguists, and policy analysts, to provide nuanced, real-world insights and address complex challenges like online abuse, child safety, and reputational damage.

Cloudflare is a global cloud platform for security, performance, and reliability. CDN delivers content from 310+ cities worldwide. DDoS protection and WAF secure websites and APIs. Workers run serverless code at the edge. DNS, domains, and email routing included. The internet's nervous system that makes websites fast and secure.

Datadog is a cloud monitoring and security platform providing infrastructure monitoring, APM, log management, and AI-powered investigations for DevOps and security teams.

HashiCorp Vault is a secrets management tool that provides secure storage, dynamic secrets, data encryption, and identity-based access. Manage API keys, passwords, certificates, and other sensitive data centrally. Vault can generate dynamic credentials for databases and cloud providers, automatically revoking them when no longer needed. Features include audit logging, fine-grained access control, and encryption as a service. Open source core with enterprise features available.

Sift is a leading digital fraud prevention platform that helps businesses secure the entire customer journey, from account creation to post-transaction activities. Leveraging a global data network of over 1 trillion annual events and AI-powered automation, Sift provides precise, split-second decisioning to detect and prevent various types of fraud, including account takeover, payment fraud, and first-party abuse. It aims to help businesses reduce fraud losses, improve operational efficiency, and enhance customer experiences by minimizing friction for legitimate users. The platform offers solutions for specific fraud vectors like fake account creation prevention, account takeover (ATO) fraud, payment fraud, policy abuse, and content scams. Sift's console allows for comprehensive visibility into user activity, enabling fraud teams to automate risk decisions, accelerate manual reviews, and build custom workflows. By integrating with existing systems and providing real-time risk scores, Sift empowers businesses to scale securely and turn fraud prevention into a measurable growth advantage, protecting revenue and building customer trust.

Socket is a developer security platform designed to protect software supply chains by analyzing and securing open-source dependencies. It helps developers and teams detect and block malicious packages, vulnerabilities, and license compliance issues across various programming languages and ecosystems. The platform offers features like AI analysis to flag hidden dependency behavior, precomputed reachability analysis to reduce false positives in CVEs, and automatic blocking of malicious dependencies. It caters to individual developers, small teams, and large enterprises, providing tools to streamline security, automate compliance, and integrate with existing development workflows. Socket aims to provide comprehensive visibility into dependencies and offers solutions for remediation, including one-click CVE fixes and automatic patch PRs. Socket is ideal for any organization that relies on open-source software and needs to mitigate supply chain risks, ensure compliance, and maintain the integrity of their applications. It helps teams focus on real risks by cutting through noise and provides enterprise-grade automation for robust security.

Tailscale is a zero-config VPN built on WireGuard that creates secure networks between devices and servers. Connect devices like they're on the same network, anywhere. No port forwarding or firewall rules needed. SSO integration with your identity provider. ACLs control who can access what. Networking that just works, so you can focus on building.

Burp Suite is what security professionals use to test web applications. Intercept HTTP traffic, scan for vulnerabilities, modify requests—find security issues before attackers do. The proxy captures everything between browser and server. The scanner automates common vulnerability checks. Manual testing tools enable deep exploration. Penetration testers and security researchers consider Burp Suite essential equipment for web application security assessment.

Istio is an open-source service mesh that extends Kubernetes to establish a programmable, application-aware network. It addresses the challenges developers and operators face with distributed or microservices architectures by providing standard, universal traffic management, telemetry, and security to complex deployments. Istio can be used whether building from scratch, migrating existing applications to cloud native, or securing existing estates. Istio provides capabilities like zero-trust security (including mTLS authentication, authorization, and encryption), deep observability into applications (integrating with APM systems like Grafana and Prometheus), and robust traffic management (enabling A/B testing, canary deployments, and load balancing). It supports multiple deployment modes, including a new ambient mode for simplified operations or traditional sidecars for complex configurations. Istio is built on the industry-standard Envoy proxy and is a graduated project in the Cloud Native Computing Foundation, supported by a broad ecosystem of contributors and partners. It is designed for modern workloads, allowing services running on Kubernetes or VMs, across multi-cloud, hybrid, or on-premises environments, to be included within a single mesh. Istio helps enterprises maintain resilient workloads across diverse platforms, ensuring connectivity and protection, and is extensible by design.

Keycloak provides identity and access management you can self-host. SSO, identity federation, user management—enterprise IAM from Red Hat, open source. The features rival commercial IAM. Self-hosting keeps control with you. The protocol support is comprehensive. Organizations wanting enterprise IAM they control choose Keycloak for self-hosted identity management.