SECURITY REPORT · EXTENSHI SCAN
Markbook
Chrome extension·by sygn.net
0
/ 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
Markbook's safety score vs every other extension we've scanned
Globally
44.260000000000005%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
34.260000000000005%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
12
median 38Lower is safer
Risky permissions
1
median 1Critical + high perms
Total permissions
11
median 4All declared perms
Critical findings
2
median 2Severity = Critical
Findings breakdown
Automated security signal · 12 distinct issues across 6 severities
12
distinct issues
detected
detected
Scanners reported 16 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical217%
High00%
Needs Review00%
Medium1083%
Low00%
Info00%
Permissions requested
1 risky permission of 11 total
1 high-risk permission require attention
This extension requests 11 permissions in total. 1 of them grant broad capabilities that are worth a careful look.
High
View open tabs
Can see URLs and titles of all open tabs
Medium
Access current tab
Can temporarily access the content of the active tab when you click the extension
Medium
Access bookmarks
Can read and modify your saved bookmarks
Medium
Add context menu items
Can add custom items to the right-click context menu
Medium
Show notifications
Can display desktop notifications outside the browser
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
Low
Access favicons
Can retrieve website favicon images
Low
Create offscreen documents
Can create hidden documents for background processing tasks
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Scan performed by extenshi.io · Jul 25, 2026· partial run (some scanners failed)
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