SECURITY REPORT · EXTENSHI SCAN
Knower
Firefox extension·by Memexcocn
0
/ 100 SAFETY SCORE
DANGEROUS
Meaningful risk surface. Avoid on managed devices without review.
Likely abandonedsafety score reduced by 30 points
- No update in over 5 years
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
Knower's safety score vs every other extension we've scanned
Globally
7%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Other
2%of other extensions carry more risk
Riskier ←→ Safer
Ranked against 26,888 other extensions
Findings
53
median 3Lower is safer
Critical findings
3
median 0Severity = Critical
Permissions
16
median 3Declared in manifest
Active users
43
median 2vs category median
Findings breakdown
Automated security signal · 53 distinct issues across 6 severities
53
distinct issues
detected
detected
Scanners reported 66 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical36%
High1630%
Needs Review00%
Medium3057%
Low36%
Info12%
Permissions requested
6 risky permissions of 16 total
1 critical permission require attention
This extension requests 16 permissions in total. 6 of them grant broad capabilities that are worth a careful look.
Critical
Access to all websites
Can read and modify content on every website you visit
High
View open tabs
Can see URLs and titles of all open tabs
High
Access browser cookies
Can read and modify cookies, potentially accessing login sessions
High
Observe web requests
Can monitor all network requests made by the browser
High
Access all HTTP sites
Can read and modify content on all non-encrypted websites
High
Access all HTTPS sites
Can read and modify content on all encrypted websites
Medium
Access current tab
Can temporarily access the content of the active tab when you click the extension
Medium
Custom menus
Can add custom items to the browser context menu
Info
*://knower.info/extension_login_success
No additional information available.
Info
*://knower.info/*
No additional information available.
Info
*://*.baidu.com/*
No additional information available.
Info
*://*.so.com/*
No additional information available.
Info
*://*.google.com.hk/*
No additional information available.
Info
*://*.google.com/*
No additional information available.
Are you the author of Knower?
Claim this extension to respond to findings, add context, and earn a verified badge on extenshi.io.
Add the badge to your README
Show Knower's live security score on GitHub or in your docs
Scan performed by extenshi.io · Aug 17, 2026
Browser extensions made transparent.