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SECURITY REPORT · EXTENSHI SCAN

Serene: Website Blocker & Productivity Timer

Edge extension·by SereneApp.com
35
/ 100 SAFETY SCORE
DANGEROUS
Meaningful risk surface. Avoid on managed devices without review.

Likely abandonedsafety score reduced by 30 points

  • No update in over 6 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

Serene: Website Blocker & Productivity Timer's safety score vs every other extension we've scanned
Globally
9%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 409,539 extensions
In Productivity
18%of productivity extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 8,187 productivity extensions
Findings
19
median 18Lower is safer
Critical findings
3
median 0Severity = Critical
Permissions
5
median 3Declared in manifest
Active users
465
median 89vs category median

Findings breakdown

Automated security signal · 19 distinct issues across 6 severities
19
distinct issues
detected
Scanners reported 26 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.

Permissions requested

4 risky permissions of 5 total
1 critical permission require attention
This extension requests 5 permissions in total. 4 of them grant broad capabilities that are worth a careful look.
Critical
Communicate with desktop apps

Can exchange messages with applications installed on your computer

High
View open tabs

Can see URLs and titles of all open tabs

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
Store local data

Can save data locally in the browser for persistence

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Scan performed by extenshi.io · Jul 25, 2026
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