---
title: "Monitor alerts and respond"
description: "Monitor alerts and respond, family Detect, NIS2 Art. 21(2)(b)"
url: https://www.alt-f1.be/en/table/so/
organization: ALT-F1 SRL, Brussels (VAT BE 0830.560.718)
---

# Monitor alerts and respond

Short label: ALERTS

Family: Detect · NIS2 Art. 21(2)(b)
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## Meaning

A security team reviews alerts. A managed response service also performs the actions included in its scope.

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## Why it matters

An alert is useful when someone can assess it and decide what happens next.

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## What you can do

Agree which events are monitored, who investigates, who may isolate a device and how your team is contacted.

## Services that can help

Device Shield and Web App Shield provide the monitoring and response included in the selected service. Human availability, actions and timing must match that agreement.

- [Device Shield](https://www.alt-f1.be/en/device-shield.md)
- [Web App Shield](https://www.alt-f1.be/en/web-shield.md)

## Official reference — NIS2 Art. 21(2)(b)

> 2. The measures referred to in paragraph 1 shall be based on an all-hazards approach that aims to protect network and information systems and the physical environment of those systems from incidents, and shall include at least the following:
>
> — Directive (EU) 2022/2555 (NIS2), Art. 21(2)

> (b) incident handling;
>
> — Directive (EU) 2022/2555 (NIS2), Art. 21(2)(b)

**What this reference concerns:** When something happens, you must be able to detect it, contain it, fix it and learn from it — people, steps and tools decided in advance.

[Read the article on EUR-Lex](https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32022L2555#art_21) · Official text, quoted from the Official Journal of the EU