Is Webex Calling for Chrome safe to use?

Webex Calling for Chrome has a security risk score of 37.34/100 (LOW risk). Our security analysis detected 49 findings. Review the detailed security assessment below to understand the specific risks before installation.

What are the security risks of Webex Calling for Chrome?

Based on our automated security analysis, Webex Calling for Chrome presents low risk level. The extension is analyzed for malware patterns, secret exposure, network communications, permissions, and supply chain vulnerabilities.

How is the security score calculated?

Risky Plugins calculates security scores using weighted categories: severity of findings (25 points max), malware detections (35 points), secret exposure (28 points), network communications (10 points), and obfuscation (10 points). Scores range from 0-100, with higher scores indicating greater risk.

What does CRITICAL, HIGH, MEDIUM, LOW, MINIMAL risk mean?

CRITICAL (80-100): Severe security issues like malware. HIGH (60-79): Significant vulnerabilities. MEDIUM (40-59): Moderate security concerns. LOW (20-39): Minor issues. MINIMAL (0-19): Very low risk. Always review findings before installing any extension.

Chrome Web Store Verified

Webex Calling for Chrome

by [email protected] · 20.0K users · 4.0 rating

ff158e2f-c7cc-57c9-8bcd-d58454c90341 | v1.0.8

LOW risk

Risk verdict

No high-risk signal observed

Score-based assessment (low risk, 37/100). No analyst review available.

Analysis record

Analysed: 2 weeks ago
Version: v1.0.8
Artifact: SHA256 37A…BFB
Source: Findings (non-IoC)

Evidence ledger

Ranked by severity · findings with a source location link to the code viewer

27 detail rows

YARA Rule Matches

8 rules

Severity	Rule	Hits	Files	Metadata
LOW	`postinstall persistence mechanism`	1	js/service-worker.js	-
LOW	`postinstall crypto operations`	3	js/click-to-call-content-script.js_metadata/verified_contents.jsonjs/options.js	-
LOW	`postinstall file manipulation`	4	js/click-to-call-content-script.jsjs/webex-content-script.jsjs/service-worker.js +1 more	-
LOW	`postinstall obfuscation`	4	js/click-to-call-content-script.jsjs/webex-content-script.jsjs/service-worker.js +1 more	-
LOW	`postinstall network communication`	5	manifest.jsonjs/click-to-call-content-script.jsjs/webex-content-script.js +2 more	-
LOW	`postinstall system command`	4	js/click-to-call-content-script.jsjs/webex-content-script.jsjs/service-worker.js +1 more	-
LOW	`postinstall file download`	4	js/click-to-call-content-script.jsjs/webex-content-script.jsjs/service-worker.js +1 more	-
LOW	`NoUseWeakRandom`	2	js/click-to-call-content-script.jsjs/options.js	-

Network Indicators

Concrete URLs, domains, IPs, emails, and hashes extracted from the analyzed artifact.

22 total

...

Network indicators are queued for lazy loading

Scroll this section into view to load the detailed rows.

Publisher Evidence

Limited evidence

[email protected]

Publisher identity, store signals, distribution reach, and warning signals used for context. Treat this as supporting evidence, not a clean bill of health.

Chrome does not expose the same publisher verification data as IDE stores, so this score is deliberately conservative.

Noisy-finding weight

x1.00

Publisher domain

cisco.com

Observed

Store verification signal

Limited signal

Limited

Extension portfolio

Portfolio

12 evidence rows available.

Finding Categories

IoC Indicators

YARA Rules Matched

8 rules(27 hits)

postinstall persistence mechanism postinstall crypto operations postinstall file manipulation postinstall obfuscation postinstall network communication postinstall system command postinstall file download NoUseWeakRandom

Requested Permissions

5 permissions

contextMenus

Low

background

Low

storage

Low

*://web.webex.com/*

Low

*://web-int.webex.com/*

Low

Security Analysis Summary

Security Analysis Overview

Webex Calling for Chrome is a Chrome Web Store extension published by [email protected]. Version 1.0.8 has been analyzed by the Risky Plugins security platform, receiving a risk score of 37.34/100 (LOW risk) based on 49 security findings.

Risk Assessment

This extension presents low security risk. Some minor findings were detected, but nothing that would prevent typical usage. Reviewing the detailed findings below is recommended before use in sensitive environments.

Findings Breakdown

Medium: 22 finding(s)
Low: 27 finding(s)

What Was Analyzed

The security assessment covers multiple analysis categories:

Malware Detection: YARA rule matching against 2,400+ malware signatures
Secret Detection: Scanning for exposed API keys, tokens, and credentials
Static Analysis: Code-level security analysis for common vulnerability patterns
Network Analysis: Detection of suspicious network communications and endpoints
Obfuscation Detection: Identification of code obfuscation techniques

Developer Information

Webex Calling for Chrome is published by [email protected] on the Chrome Web Store marketplace. The extension has approximately 20K users.

Recommendation

Exercise caution with this extension. Review the detailed findings and ensure the requested permissions align with the extension's stated functionality before installation.

Source Code Viewer

Source Code Not Available

Source code is not available for this version of the extension.

About This Extension

Google Chrome users now have access to an enterprise-grade calling experience with the Webex Calling for Chrome extension. Tightly integrated with the Google Chrome experience, Webex Calling for Chrome provides immediate access to a comprehensive suite of enterprise calling features that fits seamlessly within your Google productivity workflow. Webex Calling for Chrome is powered by the Webex platform used by over 45 million people around the world, with service in more than 120 countries. Enterprise calling features: • Inbound and outbound calling • Mid-call features like hold, resume, call transfer, call waiting • Visual voicemail • Click to call phone numbers from a Chrome webpage • Detailed call and voicemail history • Enterprise directory search and single-sign-on • Presence indicators for contacts Highlights of Enterprise calling platform: • Proven cloud calling platform used by more than 45M people worldwide • Service available in over 120 countries • More than 20 integrated service provider partners • Option to bring your own carrier Contact us: https://use.webex.com/contact-sales