SECURITY REPORT · EXTENSHI SCAN
Opponent Insights for Lichess & Chess.com
Firefox extension·by Maxim
89
/ 100 SAFETY SCORE
EXCELLENT
Looks clean. No meaningful risks detected in this scan.
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
Opponent Insights for Lichess & Chess.com's safety score vs every other extension we've scanned
Globally
62%of extensions carry more risk
Riskier ←→ Safer
Ranked against 401,999 extensions
In Games Entertainment
31%of games entertainment extensions carry more risk
Riskier ←→ Safer
Ranked against 9,480 games entertainment extensions
Findings
11
median 4Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
6
median 3Declared in manifest
Active users
1
median 4vs category median
Findings breakdown
Automated security signal · 11 distinct issues across 6 severities
11
distinct issues
detected
detected
Critical00%
High00%
Needs Review00%
Medium436%
Low764%
Info00%
Permissions requested
6 permissions declared
No risky permissions
6 permissions requested — none are flagged as risky.
Medium
Store local data
Can save data locally in the browser for persistence
Info
https://lichess.org/*
No additional information available.
Info
https://www.chess.com/*
No additional information available.
Info
https://chess.com/*
No additional information available.
Info
https://poodlechess.com/*
No additional information available.
Info
https://www.poodlechess.com/*
No additional information available.
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Scan performed by extenshi.io · Aug 20, 2026
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