Best SIEM Software in the UK

Graylog helps security and IT teams make sense of the overwhelming data their environments generate every second. Acting as a unified SIEM and log management platform, Graylog collects, normalizes, and correlates event data from every corner of the infrastructure—on-prem, cloud, or hybrid. Analysts can instantly visualize activity, detect anomalies, and investigate threats with AI-driven summaries, guided response workflows, and customizable dashboards. This clarity cuts through alert noise and turns raw data into action. For organizations under pressure to do more with lean teams and tight budgets, Graylog matters because it delivers complete visibility, faster investigations, and predictable costs—SIEM without compromise.

Heimdal® Endpoint Detection and Response is our proprietary multi-solution service providing unique prevention, threat-hunting, and remediation capabilities. It combines some of the most advanced threat-hunting technologies: - Next-Gen Antivirus - Privileged Access Management - Application Control - Ransomware Encryption Protection - Patch & Asset Management - Email Security - Remote Desktop - Threat Prevention ( DNS based ) - Threat Hunting & Action Center With 9 modules working together seamlessly under one convenient roof, all within one agent and one platform, Heimdal Endpoint Detection and Response grants you access to all the essential cybersecurity layers your business needs to protect itself against both known and unknown online and insider threats. Our state-of-the-art product empowers you to quickly and effortlessly respond to sophisticated malware with stunning accuracy, protecting your digital assets and your reputation in the process as well.

Fortinet is a global leader in cybersecurity solutions, known for its comprehensive and integrated approach to safeguarding digital networks, devices, and applications. Founded in 2000, Fortinet provides a wide range of products and services, including firewalls, endpoint protection, intrusion prevention systems, and secure access solutions. At the core of its offerings is the Fortinet Security Fabric, a unified platform that seamlessly integrates security tools to deliver visibility, automation, and real-time threat intelligence across the entire network. Trusted by businesses, governments, and service providers worldwide, Fortinet emphasizes innovation, scalability, and performance, ensuring robust defense against evolving cyber threats while supporting digital transformation and business continuity.

ConnectWise SIEM (formerly Perch) offers threat detection and response backed by an in-house Security Operations Center (SOC). Defend against business email compromise, account takeovers, and see beyond your network traffic. Our team of threat analysts does all the tedium for you, eliminating the noise and sending only identified and verified treats to action on. Built with multi-tenancy, ConnectWise SIEM helps you keep clients safe with the best threat intel on the market.

SharkStriker is an ISO27001-certified cybersecurity company offering human-led holistic security services. We were founded with the sole purpose of solving industry challenges like skill shortage, non-compliance and managing multiple vendors for cybersecurity. The name SharkStriker was inspired by the orca whales that even sharks are afraid of. They intend to be the orca whales of the digital ocean, protecting businesses from the sharks of cyberspace. We offer a gamut of industry-specific tailored cybersecurity solutions and services such as: 360-degree cybersecurity posture assessment Managed Detection and Response SIEM as service SOC-as-service IoT and Cloud Security assessment and augmentation VAPT services Compliance management for regulatory and global regulations like:- GDPR PCI-DSS ARAMCO SAMA ISO 270001 NEST and more. By having a team of threat experts working at the ground level with enterprises across industries.

Put your team’s focus back on catching attackers and let Abstract handle the heavy lifting of security data management. Our real-time streaming approach gives the breathing room to prioritize their security effectiveness instead. No Noise – Remove unnecessary noise from your data in flight before routing it to your destination No lock-in – With our real-time normalization of data to OCSF format, route to any destination without worrying No Hassle – No need to learn complex query languages with our easy to use ‘no-code-required' model for policy creation. Additionally, let our AI SME help build your policies via natural language requests. No Alert Fatigue – Our AI SME can help summarize insights and prioritize alerts based on MITRE ATT&CK Framework.

Logsign is a global vendor that specializes in providing comprehensive cybersecurity solutions that enable organizations to enhance their cyber resilience, reduce risk, and streamline security processes while decreasing HR and operational chaos. Logsign consistently offers an efficient, user-friendly, and seamless platform and employs the latest technologies to establish secure, resilient, and compliant environments while providing organizations with comprehensive visibility into their IT infrastructure, enhancing threat detection capabilities, and streamlining response efforts. In today's complex threat landscape, Logsign ensures that businesses have a robust cybersecurity posture in place, proactively safeguarding their systems, data, and digital assets. With a presence on four continents and a customer base of over 600 enterprises and governmental institutions as mentioned by Gartner SIEM Magic Quadrant two years in a row, Logsign also has high ratings on Gartner Peer Insight.

A state-of-the-art tool for security information and event management. A security surveillance tool that allows you to automatically monitor, correlate, and evaluate security events and create reports in real-time. TeskaLabs SIEM will bring a central overview of the entire company infrastructure and early detection helps eliminate risks and their possible effects on the operation of your company. TeskaLabs SIEM will always be one step ahead of potential threats and you will gain absolute supervision. TeskaLabs is a cybersecurity expert and therefore all our products meet the security standards of your company. TeskaLabs SIEM ensures regulatory compliance with legislation covering Cyber Security, GDPR, and ISO 27001:2013. Automated real-time detection and reporting of known incidents and anomalies will allow you to quickly react and prioritize the solution to individual incidents. Time savings allow you to proactively search for potential threats.

Our patented IP has been proven to scale for billions of security events from thousands of customers, in real-world security environments. Castle Shield’s solution utilizes a leading-edge log collection engine with robust correlation and analysis as well as a multi-tenant SIEM Platform. Multi-tenancy allows our customers to employ one Security Analyst per 100 customers. Our solution begins the process of a single pane of glass analysis required to monitor and manage numerous environments to achieve cybersecurity awareness. Our solution is flexible and can be installed in the provider’s local (cloud) environment allowing complete control while adhering to chain of custody concerns to meet established forensic investigation standards. The customer benefits from a scalable multi-tenant platform, delivering security products and remediation services in a cost-effective manner.

Ayati One is a unified managed cyber defense platform combining SIEM, AI-powered SOC, continuous vulnerability assessment, patch intelligence, asset intelligence, compliance monitoring, DMARC, dark-web monitoring, and a CISO dashboard in one platform. It provides real-time security monitoring, threat detection, alert correlation, AI-assisted triage, vulnerability identification, patch tracking, asset discovery, and incident response support. Ayati One provides continuous compliance visibility across ISO 27001, HIPAA, DPDP Act, NIST CSF, PCI-DSS, and CIS Controls. It also monitors domain spoofing, email authentication, leaked credentials, and exposed company information. Delivered as a managed security service, Ayati One combines the platform with SOC monitoring, investigation, triage, remediation, and response.