SECURITY REPORT · EXTENSHI SCAN
Ad Observer
Firefox extension·by Online Political Transparency Project at NYU
0
/ 100 SAFETY SCORE
RISKY
Several elevated signals. Read the findings before sharing this with your team.
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
Ad Observer's safety score vs every other extension we've scanned
Globally
52.4%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
42.4%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
78
median 38Lower is safer
Risky permissions
0
median 1Critical + high perms
Total permissions
4
median 4All declared perms
Critical findings
1
median 2Severity = Critical
Findings breakdown
Automated security signal · 78 findings across 5 severities
78
findings
detected
detected
Critical11%
High1621%
Medium6178%
Low00%
Info00%
Permissions requested
4 permissions declared
No risky permissions
4 permissions requested — none are flagged as risky.
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Unlimited local storage
Can store large amounts of data locally without size limits
Info
*://*.facebook.com/*
No additional information available.
Info
*://www.youtube.com/*
No additional information available.
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Scan performed by extenshi.io · Jun 25, 2026· partial run (some scanners failed)
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