Email Security: 7 Essential Tips

Email is the #1 attack vector for cybercriminals, accounting for 91% of all cyberattacks. But the good news? These 7 essential tips will dramatically improve your email security and protect your business from the most common threats.

Email security concept with shield and envelope
Email security: protect your inbox from cyber threats

The 7 Essential Tips

1

Enable Spam Filtering

A good spam filter is your first line of defense. It blocks malicious emails before they ever reach your inbox.

  • Use your email provider's built-in spam filtering (Microsoft 365, Google Workspace)
  • Consider additional email security solutions for business accounts
  • Regularly check your spam folder for false positives
  • Report spam that slips through to improve filtering

Tip: Enable advanced phishing protection in your email settings. Both Microsoft 365 and Google Workspace offer this for free.

2

Use Strong, Unique Passwords + 2FA

Your email password is the key to your digital identity. If attackers get it, they can reset passwords for all your other accounts.

  • Use a password manager to generate and store unique passwords
  • Make passwords at least 12 characters with mixed characters
  • Enable two-factor authentication (2FA) on all email accounts
  • Use authenticator apps instead of SMS for 2FA when possible

Tip: With 2FA enabled, even if your password is stolen, attackers cannot access your account without the second factor.

3

Don't Click Suspicious Links (Hover First)

Phishing emails trick you into clicking malicious links. The simple habit of hovering before clicking can save you from most attacks.

  • Hover over links to see the actual URL before clicking
  • Look for misspellings in domain names (paypa1.com vs paypal.com)
  • Be wary of shortened URLs (bit.ly, tinyurl) in emails
  • When in doubt, navigate directly to the website instead of clicking

Tip: On mobile, press and hold a link to preview the URL without opening it.

4

Verify Unexpected Attachments

Email attachments are a common way to deliver malware. Even files from known contacts can be dangerous if their account was compromised.

  • Never open attachments you weren't expecting
  • Be especially careful with .exe, .zip, .docm (macro-enabled) files
  • Verify with the sender through a different channel before opening
  • Use your antivirus to scan attachments before opening

Tip: If a colleague sends an unusual attachment, call them to verify. Their account may have been hacked.

5

Use Email Encryption for Sensitive Data

Regular email is like a postcard - anyone along the way can read it. Encryption ensures only the intended recipient can read your message.

  • Use your email provider's built-in encryption features
  • Microsoft 365 and Google Workspace support encrypted email
  • Consider end-to-end encryption for highly sensitive communications
  • Never send passwords, financial data, or personal info in plain email

Tip: For sensitive documents, use secure file sharing links instead of email attachments.

6

Keep Email Client Updated

Outdated software has known security vulnerabilities that attackers actively exploit. Updates patch these holes before they can be used against you.

  • Enable automatic updates for your email application
  • Update both desktop and mobile email apps
  • Keep your operating system updated as well
  • Replace software that no longer receives security updates

Tip: Set a monthly reminder to check for updates if automatic updates aren't available.

7

Train Employees to Recognize Threats

Technology alone cannot stop all threats. Your team needs to recognize and report suspicious emails to prevent successful attacks.

  • Conduct regular security awareness training
  • Share examples of real phishing attempts targeting your industry
  • Create a simple process to report suspicious emails
  • Reward employees who catch and report phishing attempts

Tip: Short, frequent training (5 minutes monthly) is more effective than annual security seminars.

Quick Checklist

Review your email security with this quick checklist:

  • Spam filtering enabled and configured
  • Strong, unique passwords on all email accounts
  • Two-factor authentication enabled
  • Team trained to hover before clicking links
  • Process for verifying unexpected attachments
  • Encryption available for sensitive communications
  • Email clients and apps up to date
  • Regular security awareness reminders

What's Next?

Email security is just one piece of your cybersecurity puzzle. To build comprehensive protection:

  1. 1 Review your overall security posture with a risk assessment
  2. 2 Implement a security policy for your organization
  3. 3 Consider compliance frameworks like CyberFundamentals for structured guidance

Ready to Improve Your Email Security?

Easy Cyber Protection helps you with a step-by-step approach to protect your organization from email threats and other cyber risks.

Frequently Asked Questions

What is the biggest email security risk?

Phishing is the biggest risk, accounting for 91% of cyberattacks. Attackers impersonate trusted organizations to steal credentials or deliver malware. Combining spam filtering with user training is the most effective defense.

Is email encryption really necessary?

For sensitive information like financial data, personal information, or business secrets - yes. Regular email can be intercepted. Modern email providers make encryption easy to enable for messages that need it.

How often should we train employees on email security?

Short, frequent training works best. Monthly 5-minute reminders or quarterly 15-minute sessions are more effective than annual training. Share real examples of attacks targeting your industry to keep it relevant.

Are free email services secure enough for business?

Free services like Gmail offer good security, but business email solutions (Google Workspace, Microsoft 365) provide better administration, compliance features, and support. For businesses handling sensitive data, paid solutions are recommended.

What should I do if I suspect a security breach via email?

Immediately change passwords for affected accounts, enable 2FA if not already active, scan devices for malware, and notify your IT team. If customer data may be compromised, you may have legal notification obligations under GDPR.

Related Articles

Sources

  1. Safeonweb.be — Centre for Cybersecurity Belgium (CCB)
  2. Verizon Data Breach Investigations Report — Annual cybersecurity statistics
  3. ENISA (EU Agency for Cybersecurity) — European cybersecurity guidelines