Incident Response Reports Highlight Identity and Low-Complexity Initial Access as Dominant Intrusion Drivers
Two 2026 incident-response reports describe threat actors increasingly favoring fast, low-complexity initial access over sophisticated exploitation, with identity compromise and common remote access paths repeatedly enabling broad downstream impact. Unit 42’s Global Incident Response Report 2026 data (based on 750+ engagements) indicates attacker activity crossed multiple attack surfaces in 87% of cases, requiring investigation across endpoints, identity systems, networks, and cloud services; it also attributes a material role to identity weaknesses in nearly 90% of investigations and reports identity-based techniques as the initial access method in 65% of cases (e.g., phishing, stolen credentials, brute force, insider activity). Phishing and vulnerability exploitation were cited as top initial access vectors (tied at 22% each), reinforcing that common, repeatable techniques remain highly effective.
Arctic Wolf reporting similarly concludes that attackers are prioritizing accessible entry points, with phishing frequently initiating business email compromise and with ransomware intrusions often beginning via abuse of remote access services such as RDP, VPN, and remote monitoring and management (RMM) tooling. Both sources emphasize that weak access controls—such as excessive permissions, non-phishing-resistant MFA, credential reuse/default passwords, IAM misconfigurations, unmanaged OAuth grants, and stale/shared accounts—allow a single foothold to expand laterally across SaaS, cloud, and on-prem environments, increasing blast radius and complicating detection and response.
Timeline
Feb 20, 2026
CSO Online reports identity and trust failures dominate incidents
On February 20, 2026, CSO Online summarized research showing identity and trust conflicts played a role in about 90% of examined security incidents, with attackers commonly using social engineering, identity phishing, credential abuse, brute force, and insider threats. The report also highlighted widespread overprivileged cloud accounts and expanding identity attack surface from cloud, SaaS, and AI adoption.
Feb 18, 2026
Multiple IR reports highlight shift to fast, low-complexity attacks
On February 18, 2026, coverage of incident-response findings from firms including Coveware and Barracuda said attackers increasingly favor phishing, abused remote access services, SaaS admin compromise, and edge-device exploitation over complex zero-day-style tradecraft. The reports emphasized rapid ransomware operations and the need to monitor recurring attacker behaviors such as suspicious privilege changes.
Feb 18, 2026
Unit 42 publishes Global Incident Response Report 2026
On February 18, 2026, reporting on Unit 42's Global Incident Response Report 2026 highlighted that identity weaknesses contributed to nearly 90% of investigations and identity-based techniques drove initial access in 65% of cases. The report also noted growing use of token theft, OAuth abuse, browser-based credential theft, and AI-assisted intrusion activity.
Dec 31, 2025
Unit 42 analyzes 750+ incident response cases for 2025 trends
Palo Alto Networks' Unit 42 compiled findings from more than 750 incident response engagements, identifying identity compromise, cross-surface movement, and accelerating attacker timelines as dominant patterns in 2025 intrusions.
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