TL;DR — Key Takeaways– The strongest cyber defense starts with trust, not technology. When citizens and businesses fear exposing private information, critical attacks can go unreported, leaving dangerous blind spots.
– AI is transforming cyber warfare on both sides. As attackers automate reconnaissance and exploitation, defenders must respond faster without sacrificing privacy, accountability or public confidence.
– Resilience beats the illusion of perfect security. Israel’s experience underscores that protecting essential services isn’t about stopping every attack; it’s about keeping infrastructure functioning under sustained pressure.
For the past three years, Israel has faced attacks from multiple adversaries, including Hamas, Hezbollah and Iran. But another battlefield that has been active throughout is cyberspace. Israel’s banks have continued operating, while fuel supplies, essential services and major national infrastructure have remained highly functional despite sustained attempts to disrupt them. While individual organizations have experienced local cyber incidents, Israel has avoided the kind of catastrophic, nationwide cyber disruption that could have paralyzed essential services during wartime. In a country facing persistent threats from adversaries with significant cyber capabilities, the continued functioning of critical infrastructure cannot be taken for granted.There are important lessons here for governments and cybersecurity leaders elsewhere, particularly as geopolitical tensions increase and attacks on civilian infrastructure become a routine feature of international conflict. One of the most significant lessons, however, concerns something that is rarely treated as a core cybersecurity capability: the relationship of trust between citizens, private organizations and the authorities responsible for protecting them.Reporting Attacks is CriticalEffective national cyber defense depends on visibility. Security authorities need to know when organizations encounter suspicious activity, when systems have been compromised and when attacks are spreading across networks. Without this information, it becomes much harder to identify coordinated campaigns or intervene before an incident escalates. However, people and organizations do not necessarily want to report cyber incidents.Consider a company that discovers malware on one of its computers. Reporting the incident may mean allowing government investigators to examine the machine. That computer may also contain confidential business information, personal correspondence, sensitive commercial material or information entirely unrelated to the security incident. Even if the original purpose of the investigation is legitimate, the possibility that information could be used for another purpose creates a powerful disincentive to cooperate.The same concern exists among private citizens. Consider a similar problem in medicine, where patients sometimes need to disclose deeply personal information to receive treatment. Medical confidentiality is an established professional obligation. Patients trust that doctors will use the information to provide treatment rather than expose them to public embarrassment.Cybersecurity authorities need to establish a comparable relationship with the organizations and citizens they protect. If reporting an incident means surrendering control over unrelated private information, many people will hesitate to come forward, and that hesitation can create precisely the blind spots that attackers exploit.The Snowden Lesson Israel confronted this issue more than a decade ago, following the disclosures made by Edward Snowden in 2013. The controversy surrounding the US National Security Agency illustrated a fundamental tension in national cybersecurity. Identifying malicious software moving through communications networks can require examining traffic. But when government agencies inspect communications, they may also gain access to private information belonging to ordinary citizens. When Israel developed its national cyber defense approach, we recognized that this conflict needed to be addressed directly. The Israeli model placed an important emphasis on protecting the content of private communications while developing the ability to identify cyber threats.One approach involved applying machine learning to network behavior. Instead of relying on reading the contents of messages, systems could learn to distinguish suspicious communications from normal traffic by examining how they behaved. Malicious communications often exhibit patterns that differ from legitimate activity. Machine learning offered a way to recognize those differences and identify potential threats without requiring going down to the level of content of private correspondence. This important conceptual development demonstrated that privacy considerations could help drive the development of more sophisticated security technologies. Of course, behavioral analysis does not eliminate every privacy concern. Metadata can itself reveal sensitive information, and attackers can adapt their techniques to evade detection. Nevertheless, the underlying principle remains valuable: governments should develop defensive capabilities that minimize unnecessary intrusion into the lives of the people they are protecting, which is even more important as artificial intelligence expands the ability of security systems to analyze enormous amounts of data.Cyber Defense is Now a Contest Between AI SystemsAs a result, Israel began using machine learning for cyber defense in 2014, well before generative AI became a mainstream technology. It was not long before attackers started applying similar techniques to improve their own attack capabilities. Once defenders developed systems capable of identifying suspicious behavior, adversaries could use machine learning to study how those defense algorithms worked and develop ways to evade them. The result was the beginning of a contest between AI-enabled attackers and AI-enabled defenders, a development that has accelerated considerably over the past decade.Today, autonomous AI agents are adding another dimension to this competition. Systems that previously assisted analysts can increasingly investigate incidents, evaluate evidence and carry out defensive tasks. Similar capabilities can also help attackers automate elements of reconnaissance, identify vulnerabilities and adapt their methods which creates a growing challenge for national cybersecurity organizations. Defensive systems must operate quickly enough to respond to increasingly automated attacks, while retaining the safeguards and accountability necessary to maintain public confidence.The temptation will be to expand surveillance and data collection in the name of greater security. But collecting more information does not automatically produce better protection, particularly if the resulting loss of trust discourages organizations from reporting incidents or cooperating with authorities.National Resilience Requires More Than TechnologySixteen years ago, Israel began developing a national cybersecurity strategy that treated cyber defense as a broad national undertaking. The objective extended beyond building advanced technologies; it involved creating an ecosystem connecting government, academia, industry and security organizations. That ecosystem helped Israel become one of the world’s leading cybersecurity centers and contributed to the development of a substantial commercial cybersecurity industry punching well above its weight. The experience of the past three years offers an opportunity to examine how that model performs under extraordinary pressure. Other countries can study the organization of national cyber defense, the relationships between public and private institutions, and the technologies used to protect critical infrastructure.There is also an important distinction between preventing every cyber incident and maintaining national resilience. No country can reasonably expect to eliminate cyberattacks. The more meaningful measure is whether essential systems can continue operating, attacks can be contained and society can function despite sustained hostile activity. As international delegations gather in Tel Aviv for Cyber Week this week, these lessons deserve serious consideration. The growing use of artificial intelligence on both sides of the cyber battlefield will make cooperation and information sharing even more important.Technology can detect suspicious activity, identify patterns and help contain attacks at extraordinary speed, but national cyber defense ultimately depends on people and institutions being willing to work together. If citizens and organizations cannot trust the authorities responsible for protecting them, even the most advanced defensive technology will operate with incomplete information. Building that trust must be treated as an essential part of cybersecurity strategy, particularly in an era when the threats themselves are becoming increasingly automated.Frequently Asked QuestionsWhat’s the biggest cybersecurity lesson from Israel’s wartime experience?Technology alone cannot deliver national cyber resilience. Effective defense depends on cooperation between government, businesses and citizens, supported by trusted incident-reporting mechanisms that encourage early threat disclosure.
How can governments detect cyber threats without compromising citizens’ privacy?Behavioral analytics and machine learning can identify suspicious network patterns without routinely examining message content. However, metadata can also reveal sensitive information, making privacy safeguards, oversight and clear limits on data use essential.
Why is AI making national cyber defense more challenging?AI enables attackers to automate reconnaissance, discover vulnerabilities and adapt their tactics faster. Defenders are deploying similar capabilities to detect and contain threats, creating an escalating contest in which automation must be balanced with accountability and human oversight.
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