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 Chrome extension security report
ID: blaaajhemilngeeffpbfkdjjoefldkok
Supported Languages
Extension Info & Metadata
Publisher Contextual Analysis
- Author
- James Anderson
- Privacy
- Privacy Policy
- Help
- Help Center
- MX records exist
- Yes
- Domain exists
- Yes
- Is disposable
- No
- Is role-based
- No
- Mailbox exists
- Yes
- Website
- Visit
You reached today's free scan limit (3/3 unique extensions).
Upgrade for full visibility.
Screenshots & videos
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
You reached today's free scan limit (3/3 unique extensions).
Upgrade for full visibility.
No network indicators were extracted from this version.
Code Diff
Compare extension code between any two versions.
0 changed files detected
No comparable text files found between these versions.
You reached today's free scan limit (3/3 unique extensions).
Upgrade for full visibility.
Related extensions
Popular in productivity/workflow
- Adobe Acrobat: PDF edit, convert, sign tools344,000,000 users
- AdBlock — block ads across the web65,000,000 users
- Adblock Plus - free ad blocker40,000,000 users
- ClassLink OneClick Extension14,000,000 users
- Clever13,000,000 users