Defensia Database Security

Overview

Defensia Database Security pairs a Linux agent with a web dashboard to help teams spot exposed database ports and suspicious login failures. It suits operators who want database-specific monitoring on their own servers, with optional blocking on the paid plan. Its one-server free tier is useful for a limited deployment, but does not block attacks.

Key features

Authentication monitoring covers MySQL/MariaDB, PostgreSQL, and MongoDB, giving teams visibility into failed logins that may signal brute-force attempts. Redis receives port-exposure checks rather than authentication-log monitoring, so its coverage is narrower.

On startup, the agent checks ports 3306, 5432, 27017, and 6379. A port bound to 0.0.0.0 generates a dashboard advisory, a practical warning about exposure across network interfaces rather than a guarantee that the service is vulnerable. The dashboard also brings together attack timelines and blocked IPs.

Repeated authentication failures can trigger IP blocking through iptables or nftables. That response is reserved for Pro; Free remains in monitor mode. Installation as a systemd service and automatic detection of MySQL, PostgreSQL, and MongoDB log files reduce setup work, although the Linux and elevated-access requirements make this a server-operator tool, not a general desktop security app.

Deployment supports Docker, Docker Swarm, and Kubernetes, including a Helm chart. The agent requires Linux kernel 4.x or newer, root or sudo access, and HTTPS internet access to the Defensia panel. This hybrid design keeps an agent on the server while using a web panel for events. Remediation guidance is included, but agentless scanning is not.

Pricing

Free — €0.00 per free. Billed Free forever, with no credit card required. It covers one server, 2,000 events per month, three days of log retention, monitor mode only, and community support. That is a sensible way to monitor a small server, but the event ceiling, short retention, and lack of blocking limit its use for ongoing response or larger estates.

Pro — €9.00 per month. Billed monthly, with an option to switch to annual billing and save 20%. Pro adds unlimited servers and events, 90 days of log retention, blocking, Slack, Discord, and webhook alerts, plus priority email support. Its 14-day trial is limited to up to three servers. Pro is the better fit for teams that need response actions or longer event history; the monthly price buys substantially more operational capacity than Free, though annual billing terms beyond the stated saving are not given here.

Platforms

Defensia supports Linux, self-hosted deployments, and web access. Its Linux kernel and sudo/root requirements rule it out for teams that cannot install a privileged server agent.

Who it's for

Choose Defensia if you manage Linux-hosted MySQL, MariaDB, PostgreSQL, or MongoDB and want login-failure monitoring alongside checks for exposed default ports. It is especially relevant when a Kubernetes, Docker, or Docker Swarm deployment fits your environment. Look elsewhere if you need agentless scanning, Redis authentication monitoring, or blocking without moving beyond the single-server Free plan.

Defensia says account passwords are cryptographically hashed. Connected-server data includes hostnames, IP addresses, operating-system information, and security events; its privacy policy states a commitment to GDPR and other applicable data-protection laws. Those data flows are worth considering when deciding whether to connect production infrastructure to a web panel.

Pros and cons

• Pro: Combines database authentication monitoring with exposure checks, so operators can review two relevant risk signals in one dashboard.
• Pro: Pro supports IP blocking and common alert integrations, making it more useful for teams that need an active response path.
• Pro: Container and Kubernetes deployment options, including a Helm chart, suit varied self-hosted environments.
• Con: Free is capped at one server and 2,000 events per month, with only three days of retention and no blocking.
• Con: A privileged Linux agent is mandatory, which excludes agentless assessments and systems where root or sudo installation is not acceptable.
• Con: Redis is checked for exposed ports but is not among the databases with full authentication-log monitoring.

Alternatives

Database Vulnerability Scanners is the broader category to explore if you want to compare products oriented around database vulnerability scanning.

Choose Oracle Cloud Infrastructure Secret Management instead when managing secrets through its free web and API service is the priority; it is not presented as a database login-monitoring alternative.

Onam Database Security offers a freemium option for cloud-account posture: its free plan covers one cloud account, up to 500 resources, core critical and high CSPM rules, and CIS benchmark coverage. That makes it a better starting point for cloud security posture checks than Defensia's server-focused login and port monitoring.

DBX is a free web option for unlimited schema introspection, database topology and scoring, and finding counts and severity. Pick it when database structure analysis is more relevant than live authentication monitoring.

Omega DB Scanner Standalone is a free Windows application focused on Oracle database security scanning, including specified Oracle 10g, 11g, and 12c versions. It is the more relevant choice for that Oracle-and-Windows use case.

Trellix Data Loss Prevention covers enterprise data loss prevention across endpoints, email, web, networks, and storage, with on-premises or SaaS management; choose it when broad DLP is the requirement.

Banyan Cloud DSPM is another paid web-based option.

CIS-CAT Pro Assessor is a paid, non-trial option with Linux, macOS, Windows, API, and self-hosted platform coverage; consider it when that platform mix is the deciding factor.

Rapid7 Surface Command is a paid option with a free trial and asset discovery, inventory, and internal and external attack-surface visibility. It fits readers prioritizing broader asset context over database-specific login monitoring.

Verdict

Defensia is a focused choice for Linux operators who want database login monitoring and exposed-port advisories, with Pro adding blocking, integrations, and longer retention. The free plan can cover a single modest server, but teams needing response actions, more capacity, or agentless assessment should look elsewhere.