SECURITY REPORT · EXTENSHI SCAN
NCOverlayHelper
Firefox extension·by すえ
83
/ 100 SAFETY SCORE
CAUTION
Mostly fine, but a few things worth reviewing before you install.
Automated analysis of publicly available code — not a professional security audit. It may produce false positives and does not prove an extension is unsafe or safe. Treat it as one signal among many. Disclaimer · Report an issue
How it ranks
NCOverlayHelper's safety score vs every other extension we've scanned
Globally
82.88%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
72.88%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
32
median 38Lower is safer
Risky permissions
0
median 1Critical + high perms
Total permissions
7
median 4All declared perms
Critical findings
0
median 2Severity = Critical
Findings breakdown
Automated security signal · 32 distinct issues across 6 severities
32
distinct issues
detected
detected
Scanners reported 38 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical00%
High00%
Needs Review00%
Medium825%
Low1856%
Info619%
Permissions requested
7 permissions declared
No risky permissions
7 permissions requested — none are flagged as risky.
Medium
Store local data
Can save data locally in the browser for persistence
Info
https://*.nicovideo.jp/*
No additional information available.
Info
https://animestore.docomo.ne.jp/*
No additional information available.
Info
https://animestore.docomo.ne.jp/animestore/mp_viw_pc*
No additional information available.
Info
https://animestore.docomo.ne.jp/animestore/mpa_fav_pc*
No additional information available.
Info
https://animestore.docomo.ne.jp/animestore/mpa_hst_pc*
No additional information available.
Info
https://animestore.docomo.ne.jp/animestore/ci_pc*
No additional information available.
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Scan performed by extenshi.io · Jul 25, 2026· partial run (some scanners failed)
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