OSSEC vs Sysdig Secure

OSSEC is an open-source host-based intrusion detection system for monitoring systems and network components. It analyzes logs, checks file integrity, monitors the Windows registry, detects rootkits, and can alert users in real time or take active response actions. Monitoring can be agent-based or agentless, and a centralized server applies policies across operating systems, with server-specific overrides. Alerts can use SMTP, SMS, and syslog; active response can block an attack immediately. The system runs on Linux, OpenBSD, FreeBSD, macOS, Solaris, and Windows, and supports self-hosted and cloud environments. OSSEC and OSSEC+ use command-line management; Atomic OSSEC editions add a management console and integrations with cloud services and other tools. OSSEC+ adds machine learning, ELK integration, threat sharing, and additional rules. Free OSSEC is listed at free; OSSEC+ is also free, with registration required. Atomic OSSEC is $5 a month per device. Atomic OSSEC SaaS offers a free 14-day trial for up to 10 endpoints.

Sysdig Secure is a cloud-native application protection platform for cloud environments, containers, Kubernetes, hosts, and serverless workloads. It uses runtime insights to prioritize risks that are exploitable in a customer’s environment. Threat detection runs in real time using Falco rules, machine learning, and drift control; vulnerability scanning is available with agent-based or agentless approaches and prioritizes vulnerabilities in use. Cloud Attack Graph connects vulnerabilities, misconfigurations, and excessive permissions to map potential attack paths. Sysdig Sage is an AI assistant for security search, vulnerability management, threat investigation, and response. The platform connects to AWS, GCP, and Azure, and documents integrations including Git, Jira, Snyk, Docker Scout, Splunk, Elasticsearch, and Syslog. Sysdig describes support for on-premises, air-gapped, and private cloud environments. Deployment is hybrid, with licensing based on hosts or compute instances for CSPM. The documented agent supports Linux distributions and Windows Server 2019 and later; the vulnerability CLI scanner is available for Linux and macOS. Pricing is by quote rather than displayed.