NCSC Early Warning Service

The National Cyber Security Centre (NCSC) has set up an early warning service to help organisations investigate cyber attacks on their network by notifying them of malicious activity that has been detected in information feeds.

Early Warning is a free NCSC service designed to inform your organisation of potential cyber attacks on your network, as soon as possible. The service uses a variety of information feeds from the NCSC, trusted public, commercial and closed sources, which includes several privileged feeds which are not available elsewhere.

https://www.ncsc.gov.uk/information/early-warning-service

Early Warning is open to all UK organisations who hold a static IP address or domain name.

Organisations will receive the following high level types of alerts:

Incident Notifications – This is activity that suggests an active compromise of your system.
For example: A host on your network has most likely been infected with a strain of malware.

Network Abuse Events – This may be indicators that your assets have been associated with malicious or undesirable activity.
For example: A client on your network has been detected scanning the internet.

Vulnerability and Open Port Alerts – These are indications of vulnerable services running on your network, or potentially undesired applications are exposed to the internet.
For example: You have a vulnerable application, or you have an exposed Elasticsearch service.

Early Warning does not conduct any active scanning of your networks itself, however some of the feeds may use scan derived data, for example from commercial feeds.

How Early Warning works

Cyber security researchers will often uncover malicious activity on the internet or discover weaknesses in organisations security controls, and release this information in information feeds. In addition, the NCSC or its partners may uncover information that is indicative of a cyber security compromise on a network. The NCSC will collate this information and use this data to alert your organisation about potential attacks on your network.

Your organisation can then use the information passed on by Early Warning to investigate the issue and implement appropriate mitigation solutions where required. The NCSC’s website provides advice and guidance on how to deal with most cyber security concerns.

Sign up for early warnings – it’s free.

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