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New Defense Strategy: Proactive Approach to Cyber Threats

The Department of Defense will infiltrate hacker groups to prevent cyberattacks—a proactive step against threats from Russia and China.

Published on October 8, 2025

Ministerie van Defensie

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The Dutch Ministry of Defense is updating its cyber strategy to preemptively eliminate hacker groups before they can launch attacks against the Netherlands. Instead of responding reactively to cyber incidents, the armed forces are now opting for a proactive approach. This means that the Ministry of Defense is infiltrating the systems of hacker groups to prevent cyber attacks. The increasing cyber threats from Russia and China require this changed approach to keep the Netherlands digitally secure.

Need for a new approach

Current geopolitical tensions and daily cyber attacks make it necessary for the Ministry of Defense to adjust its strategy. The Netherlands is facing an increasing number of cyber attacks, which are also becoming more severe. The traditional method of repelling attacks is no longer sufficient. During the presentation of the new cyber strategy, outgoing Defense Minister Brekelmans emphasized that a proactive and permanent commitment is essential to defend the Netherlands against growing cyber threats, particularly from Russia and China. This shift to a proactive stance means that the Ministry of Defense must identify and neutralize aggressive cyber actors more quickly.

The core of the new strategy

The Ministry of Defense's new cyber strategy involves infiltrating the systems of hacker groups to gain insight into their activities and potential attacks. This proactive approach enables the Ministry of Defense to neutralize cyberattacks before they are executed. Minister Brekelmans states that, in the event of an armed conflict, the Ministry of Defense must be able to disrupt attacks and render opponents' cyber tools unusable. The strategy involves a more offensive approach, investing in both people and capabilities to safeguard the Netherlands' digital security. The ‘Defense Cyber Strategy 2025’ outlines how the Ministry of Defense intends to and can deploy its cyber capabilities against cyber threats targeting the Netherlands and its allies.

Implications for NATO

The Netherlands' shift to a proactive cyber strategy aligns with broader NATO efforts to strengthen collective cyber defense. The commitment by all NATO members to invest more in defense, following the summit in The Hague, will also benefit the cyber capabilities of other member states. This means that more resources will be available for research, development, and implementation of advanced cyber defense technologies. The emphasis on cooperation and information exchange within NATO will be strengthened, enabling a more coordinated approach to cyber threats.