Essential Practices to Secure Your Email Account

A well-protected email account is a strong first line of defense against cyberattacks. Below are five essential practices to enhance your email security:

1. Use Strong, Unique Passwords – Avoid common phrases and include a mix of letters, numbers, and symbols.
2. Enable Two-Factor Authentication (2FA) – Adds an extra layer of security beyond just a password.
3. Beware of Phishing Attempts – Never click on suspicious links or download attachments from unknown senders.
4. Regularly Update Your Password – Change it periodically and never reuse passwords across accounts.
5. Monitor Account Activity – Check login history and enable alerts for unrecognized access.

For more details, visit: DCOD Cybersecurity

You Should Know:

1. Creating Strong Passwords

• Use a password manager like KeePassXC or Bitwarden to generate and store complex passwords.
• Linux Command: Generate a random password using:

  openssl rand -base64 16 
  

2. Enabling 2FA on Linux Servers

• For SSH, enforce Google Authenticator:

  sudo apt install libpam-google-authenticator 
  google-authenticator 
  

Edit `/etc/pam.d/sshd` and add:

auth required pam_google_authenticator.so 

3. Detecting Phishing Emails with CLI Tools

• Use rspamd to filter malicious emails on a mail server:

  sudo apt install rspamd 
  sudo systemctl enable --now rspamd 
  

4. Checking Suspicious URLs

• Use curl to inspect headers before visiting:

  curl -I "https://example.com" 
  

5. Monitoring Email Logs

• Check Postfix logs for unauthorized access:

  sudo tail -f /var/log/mail.log 
  

What Undercode Say:

Email security is critical in preventing breaches. Beyond basic steps:
– Use GPG for encrypted emails:

gpg --gen-key 
gpg --encrypt --sign --armor -r [email protected] file.txt 

– Windows Command: Check active SMTP sessions:

netstat -ano | findstr ":25" 

– Detect IMAP Brute Force Attacks with fail2ban:

sudo apt install fail2ban 
sudo nano /etc/fail2ban/jail.local 

Add:

[bash] 
enabled = true 

Always keep your system updated:

sudo apt update && sudo apt upgrade -y 

Expected Output:

A secure email setup with strong passwords, 2FA, phishing detection, and active monitoring.

For further reading: DCOD Cybersecurity

References:

Reported By: Marcbarbezat 5 – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

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