Sanrio Picnic Party Live Wallpaper

AI Security Review

Evidence context: threat category none; evidence quality moderate.

What the code findings show

The extension describes itself as a live HD video wallpaper for Chrome’s new-tab page, and the detected code locations fit features normally associated with that purpose. js/background.js:51:0 and js/background.js:65:0 contain fetch-call findings, while js/sidePanel.js:362:0 contains another fetch-call finding in the side-panel code. js/weather.js:49:0 contains a fetch-call finding in a file explicitly named for weather, which is consistent with retrieving weather data for a new-tab display. The extension declares no special permissions and no host permissions, so this record does not show broad page access, cookie access, or permission to read browsing data.

The four findings, NET-FETCH-js/background.js-51, NET-FETCH-js/background.js-65, NET-FETCH-js/sidePanel.js-362, and NET-FETCH-js/weather.js-49, identify code that makes network requests. A network-request finding alone does not identify the destination, request body, or whether personal data is sent. No network endpoint is listed for any of these four call sites. No malicious-domain indicator is listed alongside NET-FETCH-js/weather.js-49 or either background-script finding. No malware-signature, malware, obfuscation, secret, dependency, or tool-poisoning finding is recorded for js/background.js, js/sidePanel.js, or js/weather.js.

The strongest concern is that NET-FETCH-js/background.js-51 and NET-FETCH-js/background.js-65 run from background code, which can remain active while the browser is open, and NET-FETCH-js/sidePanel.js-362 adds a separate request location. If those calls sent browsing history, identifiers, or page content to an unknown service, that would change the assessment. The available findings do not provide a destination, transmitted fields, cookie access, host access, or a matching data-theft signature for any of those paths. js/weather.js:49:0 is also a named feature location rather than an unexplained script hidden in an unrelated component.

The scanner flagged fetch usage at js/background.js:51:0, js/background.js:65:0, js/sidePanel.js:362:0, and js/weather.js:49:0; those are normal code patterns for a wallpaper extension that supplies weather or side-panel content. With no endpoints listed and no special permissions declared, the findings do not establish browser hijacking, credential collection, advertising injection, or data export. A code review that exposes the URLs and request payloads for those four call sites would resolve the remaining uncertainty, especially for the two calls in js/background.js.

Key Reasons

• js/weather.js:49:0 is a fetch call in a weather-named component, consistent with retrieving displayed weather data.
• js/background.js:51:0 and js/background.js:65:0 are network-call findings without any listed destination or malicious-domain match.
• No special permissions or host permissions are declared.
• No malware-signature, malware, obfuscation, secret, dependency, or tool-poisoning findings are recorded.

False Positive Considerations

• Network-call detection without a listed endpoint or request payload.
• Feature-named request locations, including js/weather.js:49:0 and js/sidePanel.js:362:0.
• No malware, obfuscation, or malicious-domain evidence accompanies the fetch findings.

Reviewed 2026-09-27; recommended action: suppress false positive; model confidence 82%.