Extension

AI Security Review

Evidence context: threat category none; evidence quality moderate.

This extension's findings are overwhelmingly consistent with legitimate DuckDuckGo search functionality. All 20 IoC findings reference DuckDuckGo domains: https://duckduckgo.com/atb.js?$, https://noai.duckduckgo.com/?q=, https://noai.duckduckgo.com/ac/?q=, and [email protected]. These domains directly align with the extension's description: "Search privately by default, without AI features." The noai.duckduckgo.com subdomain appears to be DuckDuckGo's official endpoint for their non-AI search mode.

The 3 network findings in background.js:90 and background.js:122 show fetch calls, which is expected behavior for a search extension that must communicate with search engines. There are zero malware signatures, zero obfuscation findings, and zero code-smell findings. The single MD5 hash IoC (a0932ba6b7f91d3b104aac62bb188098) has no associated malware classification.

The strongest counterargument to this verdict is the empty extension name and empty developer_name field, combined with a future version number (2026.4.24) and very low user count (4). These metadata anomalies could indicate an unverified or test extension. However, metadata gaps alone do not constitute evidence of malicious behavior. The technical findings—specifically the absence of malware signatures, obfuscation, or suspicious third-party domains—provide stronger evidence about the extension's actual behavior than metadata completeness. The IoC volume is driven by the XIOC extractor flagging legitimate DuckDuckGo infrastructure, a known false-positive pattern when extensions use well-known service domains.

The extension appears to be a DuckDuckGo search tool with proper integration to their infrastructure. The findings are noise from the IoC extractor, not indicators of compromise.

Key Reasons

• All 20 IoC findings reference legitimate DuckDuckGo domains matching extension purpose
• Zero malware signatures detected
• Zero obfuscation findings
• Zero code-smell findings
• Network activity in background.js consistent with search extension functionality

False Positive Considerations

• IoC extractor flagging legitimate DuckDuckGo service domains
• Fetch calls in background.js are expected for search extensions
• MD5 hash IoC without malware classification

Reviewed 2026-05-07; recommended action: no action; model confidence 72%.