Chrome Web Store
40Versions
1Code reviewed

No malware found

In code review (v1.7.2)

Our reviewer read version 1.7.2 — the most recent version we have reviewed — and found no malicious behaviour. The version shown here has not been individually reviewed yet.

What our analysis found

LeechBlock NG, used by 100,000 people, showed no malicious code in Extension Auditor's review. It comes from a trusted publisher and was last updated in October 2026.

Analyst notes

LeechBlock NG is a well-known open-source productivity tool for blocking websites. It uses broad permissions (tabs, webNavigation, <all_urls>, etc.) essential for its blocking functionality. The code does not contain any data exfiltration, tracking, or remote code injection. The only outbound network request is an optional user-configured fetch for remote site lists, which is clearly part of its stated purpose. No data is sent to the developer or third parties. The risk-engine flags are due to inherent permissions of a blocker, not malicious intent. The publisher is trusted, and the extension has high ratings and a large user base.

LeechBlock NG

LeechBlock NG Chrome extension security report

ID: blaaajhemilngeeffpbfkdjjoefldkok

Supported Languages

🇧🇷Brazilian Portuguese
🇺🇸English
🇩🇪German
🇮🇱Hebrew
🇮🇹Italian
🇪🇸Spanish
🇸🇪Swedish
🇻🇳Vietnamese

Extension Info & Metadata

Status
Active
Version
1.8
Size
0.43 MB
Rating
4.0/5
Reviews
1,598
Users
100,000
Type
Extension
Updated
Oct 12, 2026
Category
Productivity Workflow
Price
Free
Featured
Yes
Visibility
Listed
Mature
No
By Google
No
Trusted
Yes
This publisherTrack record
1extension
All still listed
Scanned by Extension Auditor — Low RiskDevelopers: embed this badge to link to this report.

Publisher Contextual Analysis

Trusted
Author
James Anderson
MX records exist
Yes
Domain exists
Yes
Is disposable
No
Is role-based
No
Mailbox exists
Yes
Website
Visit
Extensions
1
Active
1
Obsolete
0
Listed
1
Unlisted
0
Users
100,000

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Screenshots & videos

Screenshot 1
Screenshot 2
Screenshot 3
Screenshot 4

Install growth

No Security Analysis Available

Security analysis has not been performed for this extension version yet.

About this extension

LeechBlock is a simple productivity tool for blocking time-wasting sites.

Read the publisher’s full description

LeechBlock NG (Next Generation) is a simple free productivity tool designed to block those time-wasting sites that can suck the life out of your working day. (You know: the ones that rhyme with 'Blue Cube', 'Space Hook', 'Sticky Media', 'Quitter', and the like.) All you need to do is specify which sites to block and when to block them. You can specify up to 30 sets of sites to block, with different times and days for each set. You can block sites within fixed time periods (e.g., between 9am and 5pm), after a time limit (e.g., allow up to 10 minutes in every hour), or with a combination of time periods and time limit (e.g., allow up to 10 minutes in every hour between 9am and 5pm). Additional features include: • Lockdown: Block sites immediately for a specified duration. • Access control: Set a password or random access code for the options page, to slow you down in moments of weakness! • Delaying: Set a countdown to delay access to sites instead of completely blocking them. • Password: Require a password to allow access to blocked sites. • Wildcards: Block a range of sites (e.g., *.somesite.com). • Exceptions: Whitelist sites you don't want to be blocked (e.g., +allowedsite.com). • Keywords: Block or allow pages based on keywords (e.g., ~badword). Version history: https://www.proginosko.com/leechblock/version-history/ Documentation: https://www.proginosko.com/leechblock/documentation/ Usage examples: https://www.proginosko.com/leechblock/examples/ Permissions explained: https://www.proginosko.com/leechblock/faq/permissions/ Frequently asked questions: https://www.proginosko.com/leechblock/faq/ Support: https://www.proginosko.com/leechblock/support/

User reviews

Extension files

Browse and explore files within this extension package

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No network indicators were extracted from this version.

Version
Size
Verdict
Findings
Permhash
1.8
Latest
0.43 MBNot scanned—N/A
1.7.3
0.42 MBNot scanned—
a6d657000f1f08a2b63d9f46ee06f93dd2eadaace7743fdefba7bc06c40c6f94
1.7.2
0.41 MBNo malware found0
a6d657000f1f08a2b63d9f46ee06f93dd2eadaace7743fdefba7bc06c40c6f94
1.7.1
0.41 MBNot scanned—
a6d657000f1f08a2b63d9f46ee06f93dd2eadaace7743fdefba7bc06c40c6f94
1.6.8
0.41 MBNot scanned—
376261a9df884090afd6eaf728602dc96edde65235e543a74a018edda0280523
1.6.7
0.41 MBNot scanned—
376261a9df884090afd6eaf728602dc96edde65235e543a74a018edda0280523
1.6.6
0.41 MBNot scanned—
376261a9df884090afd6eaf728602dc96edde65235e543a74a018edda0280523
1.6.5
0.40 MBNot scanned—
376261a9df884090afd6eaf728602dc96edde65235e543a74a018edda0280523
1.6.4.1
0.40 MBNot scanned—
376261a9df884090afd6eaf728602dc96edde65235e543a74a018edda0280523
1.6.4
0.40 MBNot scanned—
376261a9df884090afd6eaf728602dc96edde65235e543a74a018edda0280523
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Code Diff

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