Chrome Web Store
2Versions
1Code reviewed

Caution required

Suspicious in code review (v0.0.2)

Our reviewer found behaviour consistent with malware in version 0.0.2, but not enough to confirm it. Treat this extension as untrusted until it has been re-reviewed.

26 indicators in this extension

26 indicators
1 version analysed

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What our analysis found

Zwisper is rated caution by Extension Auditor. Our code review reported 1 finding (1 medium), led by other. Its permissions mean it can inject scripts into pages.

Key findings

  • Medium

    Other

    The functional code in this bundle (webpack label 'Coeus:' at line 114) is an IOC indicator parser that monitors every text selection on the page, classifies it as, and relays it to the extension runtime β€” behaviour completely unrelated to the advertised steganography purpose of 'StegCloak'. This code is from a distinct project ('Coeus', a threat-intelligence selection tool) and was bundled under a different brand name without declaration in manifest content_scripts, making it inert but deceptively present. Bundling foreign functionality under a mismatched brand is a recognised staging technique for future activation via a manifest update.

Analyst notes

The extension is branded as 'StegCloak' (steganography tool per CWS listing) but content. is internally labeled with the webpack bundle ID 'Coeus:' (line 114) and implements an IOC indicator parser that monitors text selections across pages β€” classifying them as domains, IPs, URLs, or hashes β€” a capability entirely unrelated to steganography. Crucially, there is no `content_scripts` declaration in and no `host_permissions`, so this code cannot be auto-injected into any webpage and is effectively inert; the third-party chrome-stats score of corroborates the negligible active risk. However, the unexplained code-identity mismatch (StegCloak branding over Coeus IOC-parsing logic) combined with the publisher's 25% malicious rate on other extensions () prevents a clean false-positive clearance; all ML signals are explained by Webpack HMR boilerplate and the 41KB SVG, not genuine malice.

Zwisper

Zwisper Chrome extension security report

ID: pefcpkhggmmbmokjdjbkjnihfhhiaong

Supported Languages

πŸ‡ΊπŸ‡ΈEnglish

Extension Info & Metadata

Status
Active
Version
2.0.0
Size
0.36 MB
Rating
5.0/5
Reviews
2
Users
64
Type
Extension
Updated
Sep 14, 2026
Category
Communication
Price
Free
Featured
Yes
Visibility
Listed
Mature
No
By Google
No
Trusted
Yes
This publisherTrack record
8extensions
2 no longer listed

Publisher Contextual Analysis

Trusted
Author
AB
Website
Visit
Extensions
8
Active
6
Obsolete
2
Listed
8
Unlisted
0
Users
127

Screenshots & videos

Screenshot 1
Screenshot 2
Screenshot 3
Screenshot 4
Screenshot 5
Screenshot 6
Screenshot 7

Install growth

Item
Type
Severity
Description
scripting
Permission
Critical
This permission allows injection and execution of JavaScript on any webpage. Rated Critical because it can modify page content, steal sensitive data, and inject malicious code into any site the extension has access to.
clipboardWrite
Permission
High
This permission allows modification of clipboard content. Rated High because it can inject malicious content into the clipboard, modify copied passwords, and manipulate copied data.
Contextual Risk Factors
Risk Factor
High
The following context increases the overall risk:β€’ 25% increase: Unsafe code evaluation capabilities increase attack surface
Unsafe WebAssembly Execution
Risk Factor
High
This extension's CSP allows "wasm-unsafe-eval".
storage
Permission
Medium
This permission allows storing data locally in the browser. Rated Medium because it can persist sensitive user data, track user activities over time, and potentially store malicious payloads.
activeTab
Permission
Medium
This permission grants temporary access to the current tab. Rated Medium because it can access current page content when invoked, though limited to user-initiated actions.
contextMenus
Permission
Low
This permission adds items to browser context menus. Rated Medium because it only modifies right-click menus without access to page content.
sidePanel
Permission
Low
This permission adds custom panels to the browser interface. Rated Low because it only affects browser UI elements and cannot access page content.
alarms
Permission
Low
This permission schedules periodic tasks. Rated Low because it can only trigger events at specified times without access to sensitive data.

26 indicators in this extension

26 indicators
1 version analysed

Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.

Unlock this report β€” $4.99Start 7-day trial β€” all reports
One-time payment Β· Secure checkout by Stripe

About this extension

Hide secrets with invisible characters in plain text securely using passwords πŸ§™πŸ»β€β™‚οΈβ­

Read the publisher’s full description

πŸ§™πŸ»β€β™‚οΈβ­ Hide secrets with invisible characters in plain text securely using passwords. πŸ”’πŸ”‘ HMAC integrity and AES-256-CTR Encryption enabled by default. πŸ‘πŸ‘ Credits: https://github.com/KuroLabs/stegcloak

User reviews

Extension files

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URLs
25
IPv4
1

URLs

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No URLs found
No IP addresses found

26 indicators in this extension

26 indicators
1 version analysed

Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.

Unlock this report β€” $4.99Start 7-day trial β€” all reports
One-time payment Β· Secure checkout by Stripe
Version
Size
Verdict
Findings
Permhash
2.0.0
Latest
0.36 MBNot scannedβ€”
af22d345c4ba41c04c1d6ed4df2c6c1a0bc13225d4e74693dd2e66df1299697d
0.0.2
1.40 MBCaution0N/A
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Code Diff

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