Chrome Web StoreNo malware found
In code review
Our reviewer read this extension’s code and found no malicious behaviour. An automated risk flag was reviewed and overturned.
9 indicators in this extension
Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.
What our analysis found
Castle Learning Tools, used by 10,000 people, showed no malicious code in Extension Auditor's review. Its permissions mean it can inject scripts into pages. It comes from a trusted publisher and was last updated in May 2022.
Analyst notes
The extension does exactly what it advertises: it reads question text from [domain withheld] pages (via a domain-restricted URL regex check before any scripting call) and lets users copy it to the clipboard or search for it on All data stays on-device — there are no network requests to any external server, no data collection, and no exfiltration. The `scripting` permission is used only after verifying the active tab matches `[domain withheld]`, and the injected function reads only visible question text with a specific DOM selector. The ML model flagged it purely on the presence of `scripting` + `activeTab` + `uses_scripting_execute_script_dynamic`, which are standard for any productivity tool that interacts with a specific site. Third-party risk scores are near-zero and publisher reputation is a Google trusted publisher badge holder.
Castle Learning Tools Chrome extension security report
ID: cjecdelginghgbedmaembjefeghndikg
Supported Languages
Extension Info & Metadata
Publisher Contextual Analysis
- Author
- Kenny Hui
- Privacy
- Privacy Policy
- MX records exist
- Yes
- Domain exists
- Yes
- Is disposable
- No
- Is role-based
- Yes
- Mailbox exists
- Yes
- Website
- Visit
Email Change History
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Screenshots & videos
Install growth
Each row lists a threat category the scanner evaluates. A checkmark means the review ran and found no matching issues in that category for this version.
Data Exfiltration
Code review completed; no malicious patterns detected for this category.
Unauthorized Data Collection
Code review completed; no malicious patterns detected for this category.
Network Interception
Code review completed; no malicious patterns detected for this category.
Code Injection
Code review completed; no malicious patterns detected for this category.
Credential Theft
Code review completed; no malicious patterns detected for this category.
Obfuscation
Code review completed; no malicious patterns detected for this category.
Tracking
Code review completed; no malicious patterns detected for this category.
Privilege Escalation
Code review completed; no malicious patterns detected for this category.
Phishing
Code review completed; no malicious patterns detected for this category.
Remote Code Loading
Code review completed; no malicious patterns detected for this category.
Other
Code review completed; no malicious patterns detected for this category.
9 indicators in this extension
Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.
About this extension
Adds additional functionality to Castle Learning
Read the publisher’s full description
Enhance your learning experience on Castle Learning with features such as question copying and question searching Copy the current question to your clipboard and/or search the web for the current question in a few clicks!
User reviews
Extension files
Browse and explore files within this extension package
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URLs
View the external URLs this extension communicates with to understand its network activity and data interactions.
9 indicators in this extension
Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.
You reached today's free scan limit (3/3 unique extensions).
Upgrade for full visibility.
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