Cybersecurity tools detect, prevent and investigate attacks. The category covers endpoint protection and detection and response, SIEM and log analysis, vulnerability scanning, email and web security, and threat intelligence. Security teams use them to monitor the environment, triage alerts and respond to incidents, often with the help of a managed service. CrowdStrike, Palo Alto Networks and Microsoft Defender are common reference points.
Security tooling is deeply privileged: an endpoint agent runs with high rights on every device, and cloud consoles can isolate machines or run commands remotely. That makes the vendor part of your attack surface and its update channel a supply-chain risk. Telemetry also leaves your network and may include file names, user names and command lines. Switching usually means replacing agents on every machine.
When choosing a European option, ask what telemetry is sent, where it is processed and how long it is retained, whether detection also works offline or on-premise, and how the vendor secures its own build and update pipeline. Look for documented independent evaluations, open interfaces for forwarding alerts to your own SIEM, and exportable detection rules and logs. The European Commission names trusted ICT supply chains as a policy priority.