Spam Defender – Email Blocker Security & Risk Analysis

wordpress.org/plugins/spam-defender-email-blocker

Block specific email addresses from using your WordPress site. Stop fake orders, spam registrations, and unwanted comments.

10 active installs v1.0.1 PHP 7.4+ WP 6.0+ Updated Dec 19, 2025
blockcommentsemailregistrationwoocommerce
100
A · Safe
CVEs total0
Unpatched0
Last CVENever
Safety Verdict

Is Spam Defender – Email Blocker Safe to Use in 2026?

Generally Safe

Score 100/100

Spam Defender – Email Blocker has no known CVEs and is actively maintained. It's a solid choice for most WordPress installations.

No known CVEs Updated 3mo ago
Risk Assessment

The "spam-defender-email-blocker" v1.0.1 plugin exhibits a strong security posture based on the provided static analysis. The complete absence of dangerous functions, SQL queries, file operations, and external HTTP requests is commendable. Furthermore, all identified output is properly escaped, and nonce checks are present, indicating good development practices for securing sensitive operations.

The taint analysis reveals no flows with unsanitized paths or any critical or high-severity issues, which is a positive sign. The vulnerability history is also clean, with no known CVEs, indicating a lack of previously discovered significant security flaws. This suggests the plugin has likely been developed with security in mind or has been robust enough to avoid past exploitable issues.

While the plugin demonstrates several strengths, it's important to note the absence of capability checks. While not a direct vulnerability in this specific analysis, it could become a concern if the plugin were to introduce new functionality that requires user role enforcement. Overall, the plugin appears secure for its current version and feature set, with no immediate critical risks identified.

Vulnerabilities
None known

Spam Defender – Email Blocker Security Vulnerabilities

No known vulnerabilities — this is a good sign.
Code Analysis
Analyzed Mar 17, 2026

Spam Defender – Email Blocker Code Analysis

Dangerous Functions
0
Raw SQL Queries
0
0 prepared
Unescaped Output
0
15 escaped
Nonce Checks
2
Capability Checks
0
File Operations
0
External Requests
0
Bundled Libraries
0

Output Escaping

100% escaped15 total outputs
Data Flows
All sanitized

Data Flow Analysis

2 flows
settings_page (spam-defender-email-blocker.php:59)
Source (user input) Sink (dangerous op) Sanitizer Transform Unsanitized Sanitized
Attack Surface

Spam Defender – Email Blocker Attack Surface

Entry Points0
Unprotected0
WordPress Hooks 7
actionadmin_menuspam-defender-email-blocker.php:27
filterregistration_errorsspam-defender-email-blocker.php:31
filterwoocommerce_registration_errorsspam-defender-email-blocker.php:32
filterwoocommerce_process_login_errorsspam-defender-email-blocker.php:33
filtersdef_authenticate_userspam-defender-email-blocker.php:34
filterpreprocess_commentspam-defender-email-blocker.php:35
actionwoocommerce_checkout_processspam-defender-email-blocker.php:36
Maintenance & Trust

Spam Defender – Email Blocker Maintenance & Trust

Maintenance Signals

WordPress version tested6.9.4
Last updatedDec 19, 2025
PHP min version7.4
Downloads273

Community Trust

Rating0/100
Number of ratings0
Active installs10
Developer Profile

Spam Defender – Email Blocker Developer Profile

Raisul Islam Shagor

5 plugins · 60 total installs

94
trust score
Avg Security Score
100/100
Avg Patch Time
30 days
View full developer profile
Detection Fingerprints

How We Detect Spam Defender – Email Blocker

Patterns used to identify this plugin on WordPress sites during automated security audits and web crawling.

Asset Fingerprints

Asset Paths
/wp-content/plugins/spam-defender-email-blocker/spam-defender-email-blocker.php

HTML / DOM Fingerprints

CSS Classes
wrapwidefatstripedtablenavtablenav-pages
Data Attributes
name="block_email"name="email_to_block"name="sdef_block_email_nonce"name="unblock_email"name="email"name="sdef_unblock_email_nonce"+2 more
FAQ

Frequently Asked Questions about Spam Defender – Email Blocker