Find notable cyber news and cases, enriched with sources, timelines, and signals.
Home Browse News Feed Stats Watchlists Beta About Contact

NCSC Share and Defend blocks nearly one billion scam site attempts via ISP DNS filters

Security Tool/Service
First reported
Last updated
Happening score
H score 30
1 unique sources, 1 articles

Summary

Hide ▲

The NCSC Share and Defend service has blocked almost one billion scam website access attempts in less than a year, showing large-scale disruption of malicious site reach through ISP DNS filtering. The service matters because it stops UK users from reaching known harmful domains before a phishing email, scam text, or fraudulent ad can cause damage. The rollout, first introduced in May 2024, includes partners such as BT and other ISPs. The announcement also signals continued use of shared threat intelligence to harden consumer and business access paths.

Related Happenings

UK government cyber resilience funding and pledge

Public Sector Action
First: 22.04.2026 17:10 Last: 22.04.2026 17:10 Sources 1

About this happening: **UK government** announced **£90m ($120m)** in cybersecurity funding and a new **Cyber Resilience Pledge**, aiming to strengthen **national cyber resilience**. The initiative was...

Open Happening

UK government fraud reporting service and Online Crime Centre

Public Sector Action
First: 25.03.2026 11:35 Last: 25.03.2026 11:35 Sources 1

About this happening: The **UK government** launched a **national fraud reporting service** and refreshed its fraud strategy with a new **Online Crime Centre**, strengthening coordination against **cyb...

Open Happening

UK Home Office and National Crime Agency Online Crime Centre launching the Online Crime Centre to crack down on fraud and disrupt cyber-criminal operations for Set to begin work

Public Sector Action
First: 09.03.2026 16:00 Last: 09.03.2026 16:00 Sources 1

About this happening: The **UK Home Office** and **National Crime Agency** are launching the **Online Crime Centre** to disrupt **cyber-criminal operations** and fraud at source. The unit, set to begin...

Open Happening

NCSC warning on Iranian cyberattack risk for UK organisations

Public Sector Action
First: 02.03.2026 17:54 Last: 02.03.2026 17:54 Sources 1

About this happening: The **UK National Cyber Security Centre (NCSC)** issued a warning about a **heightened risk of Iranian cyberattacks** amid the **Middle East conflict**, urging UK organisations to...

Open Happening

NCSC pilots Proactive Notifications vulnerability notification service

Public Sector Action
First: 05.12.2025 00:21 Last: 05.12.2025 00:21 Sources 1

About this happening: The **UK National Cyber Security Center (NCSC)** has begun testing **Proactive Notifications**, a new government cybersecurity service that will contact organizations about **vuln...

Open Happening

Timeline

  1. 03.12.2025 18:08 2 articles · 5mo ago

    NCSC announces Share and Defend scam-site blocking results

    Initial Disclosure

    British Security Minister Dan Jarvis announced in London on December 3, 2025 that the NCSC’s Share and Defend service had prevented almost one billion attempts to reach scam websites in less than a year by using threat intelligence and indicators of compromise from sources including passive domain name system (PDNS) and takedown reports to populate ISP DNS filters, with partners such as BT, Cyber Defence Alliance, TalkTalk, PXC, Vodafone, and Jisc.

    Show sources
    Open in new tab