Best CASB (Cloud Access Security Broker) Tools

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Cloudflare started as a simple application to find the source of email spam. From there it grew into a service that protects websites from all manner of attacks, while simultaneously optimizing performance.

Bitglass provides a multi-mode CASB that secures SaaS applications, IaaS instances, data lakes, and private apps via forward proxy, reverse proxy, and API integrations. It delivers real-time data protection and threat prevention using machine-learning to adapt to new cloud apps, malware, and user behaviors. The agentless architecture offers end-to-end visibility, prevents data leakage, and limits external sharing. As part of its integrated SASE platform with SmartEdge SWG and ZTNA, Bitglass suits enterprises adopting cloud and BYOD while addressing compliance gaps in dynamic environments.

Broadcom Symantec Data Loss Prevention (DLP) is an enterprise-grade information protection platform that discovers, monitors, and prevents unauthorized transmission of sensitive data across endpoints, networks, cloud applications, and databases. The solution serves large enterprises requiring comprehensive data visibility and policy enforcement across hybrid environments. DLP 25.1 is positioned for organizations managing complex compliance requirements including GDPR, HIPAA, and PCI-DSS, with particular strength in preventing data exfiltration through endpoint agents and network detection servers.

Most security stacks get unmanageably complex as your business grows. Coro consolidates endpoint, email, cloud, network, identity, data protection, and security awareness training into one unified platform.

Cynerio provides healthcare-focused IoT security for hospitals and other healthcare delivery organizations. Its platform discovers connected medical and IoT devices, classifies them, learns normal communication patterns, and identifies anomalous or malicious activity on the network. The product is strongest in clinical environments where device criticality, patient-care workflows, and uptime constraints matter. It is best suited for healthcare security teams that need device visibility, risk context, and policy enforcement for medical devices without relying on endpoint agents.

Netskope provides Netskope One Data Loss Prevention (DLP), a cloud-delivered solution integrated into its Security Service Edge (SSE) platform for zero trust data protection. It secures sensitive data across SaaS, IaaS, private apps, web, email, endpoints, and AI environments using unified classification, policy enforcement, and incident management. The patented lightweight endpoint agent enables context-aware inspection of local peripherals like USB drives with cloud-based ML classifiers, OCR, file fingerprinting, and exact data matching (EDM). Best for enterprises needing consistent DLP coverage in hybrid and cloud-native setups with high detection accuracy.

Palo Alto Networks is a major vendor in the Firewall / NGFW market, best known for PAN-OS-based next-generation firewalls and Cloud NGFW. Its firewalls combine application-aware policy, user-based controls, and threat prevention to inspect traffic, including encrypted sessions, and block known and unknown threats. It fits enterprises that need granular segmentation, internet edge protection, and consistent policy across physical and cloud deployments. Adjacent offerings exist, but the core firewall line remains centered on network traffic control, inspection, and prevention.

Proofpoint is a human-centric cybersecurity platform focused on protecting organizations from email-based and identity-driven attacks such as phishing, business email compromise (BEC), and social engineering. It secures inbound and outbound communications using advanced threat detection, AI-driven impersonation analysis, URL and attachment sandboxing, and behavioral risk signals. Beyond email protection, it extends into data loss prevention (DLP), insider threat detection, and security awareness training to reduce human risk across the organization. The platform integrates across email, cloud applications, and collaboration tools to protect sensitive data and stop attacks targeting users.

Skyhigh Security CASB is a cloud-based, multi-tenant Cloud Access Security Broker that deploys via forward and reverse proxy modes for real-time control over sanctioned and unsanctioned cloud services. It leverages the Cloud Registry for 50+ attribute risk assessments across 20,000+ services, enabling discovery, classification, and remediation. Key capabilities include DLP policy enforcement synced with endpoint DLP, machine learning-based UEBA for insider threat detection, malware analysis, configuration auditing against benchmarks with automated remediation, and contextual access controls. Best suited for enterprises needing comprehensive visibility and governance across hybrid cloud environments with SharePoint integration.

Trellix Helix is a SaaS security operations platform that unifies SIEM, SOAR, and threat intelligence, integrating over 600 Trellix and third-party tools for multi-vector threat detection and response. It augments existing SIEMs with analytics, behavioral analysis, and workflow automation, enabling correlated investigations across endpoints, networks, and cloud environments. Best suited for enterprises seeking XDR capabilities without replacing legacy SIEMs, it leverages Trellix's global threat intelligence for contextual IOCs and TTP-based rules, streamlining alert triage and containment.

Versa Networks, the leader in SASE, combines extensive security, advanced networking, full-featured SD-WAN, genuine multitenancy, and sophisticated analytics via the cloud, on-premises.

Zscaler provides a cloud-native Zero Trust Exchange platform with over 150 global POPs, processing 200 billion+ daily transactions for secure user-to-application connectivity. It delivers Zscaler Internet Access (ZIA) as a security service edge (SSE) with secure web gateway (SWG), full SSL inspection, and Zscaler Private Access (ZPA) for zero trust network access (ZTNA) replacing VPNs. Backed by machine learning from massive scale, it offers 200,000+ daily security updates. Best for distributed enterprises needing low-latency protection for remote users, SaaS, and private apps without legacy hardware.