Cyber security

SpoofCheck – Fortifying Email Defenses By Unmasking Domain Spoofability

A program that checks if a domain can be spoofed from. The program checks SPF and DMARC records for weak configurations that allow spoofing.

Additionally it will alert if the domain has DMARC configuration that sends mail or HTTP requests on failed SPF/DKIM emails.

Usage:

./spoofcheck.py [DOMAIN]

Domains are spoofable if any of the following conditions are met:

  • Lack of an SPF or DMARC record
  • SPF record never specifies ~all or -all
  • DMARC policy is set to p=none or is nonexistent

Dependencies

  • dnspython
  • colorama
  • emailprotectionslib
  • tldextract

Setup

Run pip install -r requirements.txt from the command line to install the required dependencies.

Coming Soon

  • Standalone Windows executable
  • Basic GUI option
  • Tests
Varshini

Varshini is a Cyber Security expert in Threat Analysis, Vulnerability Assessment, and Research. Passionate about staying ahead of emerging Threats and Technologies.

Recent Posts

git fetch vs git pull: How They Work and When to Use Each

Both git fetch and git pull talk to a remote repository, but they do very different things to your…

1 week ago

git cherry-pick Command: Apply Commits from Another Branch

Sometimes the change you need already exists, just on the wrong branch. A hotfix lands…

1 week ago

Best Email APIs for Secure Business Email: Why Developers Are Moving Beyond SMTP

Email is still one of the most important communication channels inside modern applications. Password resets,…

1 week ago

Nginx Commands in Linux: Start, Stop, Reload, Test, and Log

Nginx is a high-performance web server and reverse proxy trusted by some of the largest…

2 weeks ago

ufw Command in Linux: Manage Firewall Rules with Examples

ufw (Uncomplicated Firewall) sits on top of iptables (or nftables on newer systems) and replaces…

2 weeks ago

who Command in Linux: Show All Logged-In Users and Sessions

When you share a server with a team or investigate unexpected activity, the first question…

2 weeks ago