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IR Trends Q1 2026: Phishing reemerges as top initial access vector, as attacks targeting public administration persist

Blog.Talosintelligence •Aliza Johnson • April 22, 2026

Phishing reemerged as the most observed means of gaining initial access, accounting for over a third of the engagements where initial access could be determined. Phishing has not been the top vertical for initial access since Q2 2025.

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Phishing Surges as Leading Initial Access Method in Q1 2026 In the first quarter of 2026, phishing has returned as the primary method for attackers to gain initial access to organizations, accounting for over a third of such engagements, as reported by Cisco Talos. This marks the first time phishing has led this category since Q2 2025, when exploitation of public-facing applications became prevalent due to attacks on Microsoft SharePoint servers. The resurgence of phishing indicates a shift in tactics by cybercriminals, who are also experimenting with AI tools to enhance their attacks. Organizations across various sectors, particularly public administration, are being targeted. The scope of impact is significant, affecting numerous organizations that rely on digital infrastructure. The trend suggests a need for enhanced security measures against phishing attempts. Current status indicates that phishing remains a critical concern for cybersecurity professionals. 2 sources 52

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IR Trends Q1 2026: Phishing reemerges as top initial access vector, as attacks targeting public administration persist

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