SECURITY REPORT · EXTENSHI SCAN
Rebounce Calculator
Edge extension·by Safia Sadiq
41
/ 100 SAFETY SCORE
RISKY
Several elevated signals. Read the findings before sharing this with your team.
Likely abandonedsafety score reduced by 30 points
- No update in over 5 years
- Built on Manifest V2, which Chrome and Edge are retiring
Why this matters
An unmaintained extension keeps whatever flaws it shipped with, and a listing with users but no owner is an attractive target to buy and repurpose.
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
Rebounce Calculator's safety score vs every other extension we've scanned
Globally
16%of extensions carry more risk
Riskier ←→ Safer
Ranked against 391,645 extensions
In Developer Tools
25%of developer tools extensions carry more risk
Riskier ←→ Safer
Ranked against 3,298 developer tools extensions
Findings
15
median 16Lower is safer
Critical findings
1
median 1Severity = Critical
Permissions
0
median 3Declared in manifest
Active users
8
median 66vs category median
Findings breakdown
Automated security signal · 15 distinct issues across 6 severities
15
distinct issues
detected
detected
Scanners reported 27 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical17%
High640%
Needs Review00%
Medium640%
Low213%
Info00%
Permissions requested
0 permissions declared
No permissions requested
This extension doesn't request any browser permissions. That's unusually clean.
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Scan performed by extenshi.io · Sep 13, 2026
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