Article ID: 8b18ece03e4035cd98d049a1c46f65cbe41249d9fe47c6dc6e654e921caed671
Source ID: secondary:businessinsurance.com
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URL: https://www.businessinsurance.com/data-theft-leading-cyber-threat-in-2025-resilience/
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Data theft leading cyber threat in 2025: Resilience - Business Insurance Skip to content Register for free Search Search Log In Risk Management Cyber Risks Pricing Trends Mergers & Acquisitions Technology Sponsored Content WSIA RISKWORLD Workers Comp & Safety Workers Comp Cost Control Pain Management Workplace Safety International EMEA Asia-Pacific Latin America People Events BI Intelligence Top 100 Agents & Brokers Best Places to Work 2025 Lists Directories Insurance Pricing BI Stock Index Magazine Current Issue Past Issues Subscribe Women to Watch ALL INsurance Resources Risk Perspectives Sponsored Content Webinars White Papers Risk Management Cyber Risks Pricing Trends Mergers & Acquisitions Technology Sponsored Content WSIA RISKWORLD Workers Comp & Safety Workers Comp Cost Control Pain Management Workplace Safety International EMEA Asia-Pacific Latin America People Events BI Intelligence Top 100 Agents & Brokers Best Places to Work 2025 Lists Directories Insurance Pricing BI Stock Index Magazine Current Issue Past Issues Subscribe Women to Watch ALL INsurance Resources Risk Perspectives Sponsored Content Webinars White Papers Risk Management Cyber Risks Pricing Trends Mergers & Acquisitions Technology Sponsored Content WSIA RISKWORLD Workers Comp & Safety Workers Comp Cost Control Pain Management Workplace Safety International EMEA Asia-Pacific Latin America People Events BI Intelligence Top 100 Agents & Brokers Best Places to Work 2025 Lists Directories Insurance Pricing BI Stock Index Magazine Current Issue Past Issues Subscribe Women to Watch ALL INsurance Resources Risk Perspectives Sponsored Content Webinars White Papers Risk Management Cyber Risks Pricing Trends Mergers & Acquisitions Technology Sponsored Content WSIA RISKWORLD Workers Comp & Safety Workers Comp Cost Control Pain Management Workplace Safety International EMEA Asia-Pacific Latin America People Events BI Intelligence Top 100 Agents & Brokers Best Places to Work 2025 Lists Directories Insurance Pricing BI Stock Index Magazine Current Issue Past Issues Subscribe Women to Watch ALL INsurance Resources Risk Perspectives Sponsored Content Webinars White Papers Data theft leading cyber threat in 2025: Resilience by Matthew Lerner Cyber Risks , Emerging Risks , Technology Feb 25, 2026 Data theft as opposed to encryption became a leading cyber threat in 2025 while artificial intelligence amplified the effects of phishing attacks. Vendor relationships also remained a chief source of exposure despite a small decline in vendor related incidents, all according to a report from cyber insurer Resilience. Cybercriminals have shifted from ransomware based on encryption of data to extortion based on data theft. Data theft-only attacks rose to 65% of extortion claims in the second half of 2025 from 49% in the first half of the year. For the full-year 2025, data theft without encryption accounted for 57.6% of extortion claims, while encryption without data theft took only a 13% share. Increasing phishing attacks in 2025 after a decline in 2024 “suggests AI is making a significant impact on the threat landscape,” Resilience said in its report. The cyber insurer cited a research study at Harvard that suggests AI-generated phishing attacks are more than four times as effective as traditional methods. Tools including phishing-resistant multifactor authentication and email authentication protocols can be effective in combatting such AI-augmented attacks, Resilience said. Vendor relationships continue to be a source of cyber exposure as vendor-related cyber incident losses averaged $1.36 million, second only to phishing’s $1.6 million average loss. Such vendor-related incidents generally fall into one of three categories according to Resilience: vendor ransomware attacks that spread to clients causing business interruption; vendor data breaches that expose client information; and nonmalicious vendor outages that disrupt operations without malicious intent. 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