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Best Free AlienVault USM (from AT&T Cybersecurity) Alternatives — 6 Tools Compared in 2026

Explore 6 alternatives to AlienVault USM (from AT&T Cybersecurity) — vetted by our editors with real user reviews, pricing, and feature comparisons.

The 6 best free AlienVault USM (from AT&T Cybersecurity) alternatives, summed up

Quick answer

If you're after a AlienVault USM (from AT&T Cybersecurity) alternative, start with SolarWinds Security Event Manager, Blumira Automated Detection & Response and IBM QRadar. SolarWinds Security Event Manager leads the list with a 4.6★ rating from real users. Compare all 6 on rating and pricing below.

There's no single best tool for everyone, so if AlienVault USM (from AT&T Cybersecurity) falls short on cost, features, or ease of use, look here. These 6 security information and event management (siem) software free alternatives lead the field, ranked by SpotScore (a blend of real-user satisfaction and market presence), ratings, and pricing. Compare them quickly in the table, then read each profile.

ProductSpotScoreRatingPricingBest for
SolarWinds Security Event ManagerProtecting your network, 24/7.—★★★★★ 4.6Freefrom $2,525.00teams of all sizes
Blumira Automated Detection & ResponseStay ahead of threats with proactive cybersecurity solutions.—★★★★★ 4.8FreeFreemium · Subscriptionteams of all sizes
IBM QRadarDetect threats, protect assets with IBM QRadar.—★★★★☆ 4.32(210)FreeFree Trial · Subscription · Quotation Basedmid-size & enterprise teams
EventSentryStreamline your server monitoring and log management.—★★★★★ 4.71(36)FreeFree Trial · Freemium · Quotation Basedteams of all sizes
CyStack PlatformEmpowering businesses to conquer cyber threats—Not yet ratedFreeFree Trial · Quotation Basedteams of all sizes
VoltConsoleSecure, monitor, and streamline with VoltConsole.—Not yet ratedFreeFreemium · Subscription · Quotation Basedteams of all sizes
SolarWinds Security Event Manager

SolarWinds Security Event Manager

Protecting your network, 24/7.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

4.6

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What is SolarWinds Security Event Manager?

Introducing SolarWinds Security Event Manager – an innovative solution designed to enhance your cybersecurity defenses with ease and affordability. As a real-time Security Information and Event Management (SIEM) platform, Security Event Manager (SEM) works tirelessly to detect, alert, and ...

Read more about SolarWinds Security Event Manager
Free TrialTry Free →
Blumira Automated Detection & Response

Blumira Automated Detection & Response

Stay ahead of threats with proactive cybersecurity solutions.

Best for: SMB teams · Mid-market · Enterprise

Try for Free

4.8

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What is Blumira Automated Detection & Response?

Blumira is a cloud SIEM platform that provides automated threat detection and response for IT teams without a dedicated security operations center. It reduces alert overload, simplifies log management, and handles threat remediation automatically, keeping systems monitored without requiring ...

Read more about Blumira Automated Detection & Response

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IBM QRadar - New SaaS Software

IBM QRadar

Detect threats, protect assets with IBM QRadar.

Best for: Mid-market · Enterprise

Start Free Trial

4.3

210 verified reviews

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What is IBM QRadar?

IBM QRadar is a top-rated Security Information and Event Management software helping organizations detect and eliminate potential damage from network breaches and cyber-attacks. Implementing QRadar, teams can patch essential asset vulnerabilities and investigate suspicious activity quickly and ...

Read more about IBM QRadar
Free TrialTry Free →·

Starts from $800/Month

EventSentry - New SaaS Software

EventSentry

Streamline your server monitoring and log management.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

4.7

36 verified reviews

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What is EventSentry?

EventSentry is a log and server monitoring tool designed to make workflows much easier. Get email alerts in response to monitored events, data and security codes, with embedded visual charts for analyzing performance. All of these metrics can be accessed via dashboard and made available across ...

Read more about EventSentry
Free TrialTry Free →·

EventSentry offers custom pricing plan

CyStack Platform - New SaaS Software

CyStack Platform

Empowering businesses to conquer cyber threats

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

Add to compare

What is CyStack Platform?

CyStack Platform is a revolutionary software designed to whip up cybersecurity solutions and automate tedious workflows for businesses of all sizes. The solution equips companies with tools to efficiently manage IT resources and monitor potential threats, while enabling them to detect and ...

Read more about CyStack Platform
Free Trial·

CyStack Platform offers custom pricing plan

VoltConsole - New SaaS Software

VoltConsole

Secure, monitor, and streamline with VoltConsole.

Best for: SMB teams · Mid-market · Enterprise

Try for Free

Add to compare

What is VoltConsole?

VoltConsole is the perfect solution for businesses with distributed applications and infrastructure. It provides a single platform to manage and monitor all layers of security services, give early warnings, and gain actionable business insights. Proactive alerts and autonomous anomaly detection ...

Read more about VoltConsole

Starts from $25/Month, also offers free forever plan

Why each earned a place here

SolarWinds Security Event ManagerBest for teams of all sizes
Blumira Automated Detection & ResponseBest for teams of all sizes
IBM QRadarBest for mid-size & enterprise teams

Reviewers praise its log collection and event correlation for effective threat detection.

Watch for: Several reviewers find it complex and resource-heavy, sometimes hard to analyze logs.

EventSentryBest for teams of all sizes

Comprehensive monitoring

Watch for: May require technical expertise

CyStack PlatformBest for teams of all sizes

Automates cybersecurity workflows

Watch for: Complex setup process

VoltConsoleBest for teams of all sizes

Centralized security management

Watch for: Complex setup process

What to focus on in a AlienVault USM (from AT&T Cybersecurity) alternative

Here's how these 6 security information and event management (siem) software free alternatives stack up on the numbers: 6 offer a free tier; paid plans run $2525, with SolarWinds Security Event Manager the cheapest entry point; and EventSentry is the highest rated at 4.71★ across 36 reviews.

The logic behind the ranking.

Frequently Asked Questions (FAQs)

Stuck on something? We're here to help with all the questions and answers in one place.

The top-rated alternatives to AlienVault USM (from AT&T Cybersecurity) are Blumira Automated Detection & Response (4.8★), EventSentry (4.7★), SolarWinds Security Event Manager (4.6★). Compare all 6 alternatives side-by-side above.

When evaluating alternatives to AlienVault USM (from AT&T Cybersecurity), prioritize: Threat Protection, Incident Management, Compliance Management, Monitoring, Event Logs, transparent pricing, free trial availability, and integrations with your existing tools. Use the filters above to compare by feature, budget, and team size.

AlienVault USM (from AT&T Cybersecurity) starts from $1,075.00 per month. Many alternatives offer similar functionality at different price points — some with free tiers, others with more flexible per-seat pricing. Use the filters above to narrow by budget.

Migration difficulty depends on how deeply AlienVault USM (from AT&T Cybersecurity) is integrated into your workflows. Most alternatives offer data export/import tools and dedicated onboarding support. We recommend shortlisting 2–3 options, running a free trial, and checking each vendor's migration guides before committing.

Deciding on the right AlienVault USM (from AT&T Cybersecurity) alternative

Switching from AlienVault USM (from AT&T Cybersecurity)

Replacing AlienVault USM (from AT&T Cybersecurity) is easiest when you plan the data move first. Export your records, confirm the new tool imports them, and verify your key workflows hold. Pilot the switch free, then migrate fully, keeping AlienVault USM (from AT&T Cybersecurity) open as backup until you're settled.

Disclaimer: This research has been collated from a variety of authoritative sources. We welcome your feedback at [email protected].