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Phishing Protection

Beginner8 min readDecember 2, 2024
PhishingEmail SecuritySocial Engineering

Phishing is the most common attack method used by cybercriminals. Learn how to recognise phishing attacks, defend against them and protect your business effectively.

1. What is Phishing?

Phishing is a cyber attack method in which attackers pose as a trusted entity in order to steal sensitive information such as passwords, credit card details or login credentials.

Alarming statistics

91% of all cyber attacks start with phishing

1 in 99 emails is a phishing attack

30% of phishing emails are opened

12% click on malicious links

2. Types of Phishing Attacks

Email Phishing

Classic phishing via forged emails that pretend to come from banks, online shops or government agencies.

Warning signs

  • • Urgency and time pressure
  • • Spelling and grammar mistakes
  • • Suspicious sender addresses
  • • Requests to enter data
  • • Unexpected attachments

Spear Phishing

Targeted attacks on specific people or organisations using personalised information.

What makes it different

  • • Personalised approach
  • • Researched information
  • • Higher success rate
  • • Professional presentation
  • • Often aimed at executives

CEO Fraud / Whaling

Attacks that impersonate senior management in order to trick employees into making fraudulent transfers.

Typical sequence

  • • Email from the “CEO” to accounts payable
  • • Urgent transfer demanded
  • • Confidentiality emphasised
  • • High loss amounts
  • • Time pressure used as leverage

Smishing & Vishing

Phishing by text message (smishing) or telephone (vishing) instead of email.

Examples

  • • Parcel notifications by text message
  • • Calls from “Microsoft Support”
  • • Bank security warnings
  • • Prize notifications
  • • Verification requests

3. Recognising Phishing Emails

Warning signs

  • Check the sender: suspicious email addresses (@gmial.com instead of @gmail.com)
  • Check the links: hovering over a link shows the real URL
  • Urgency: “act immediately” or “account blocked”
  • Attachments: unexpected .exe, .zip or Office files
  • Language: faulty grammar or unusual phrasing

Responding the right way

  • ✓Do not click: never open links or attachments
  • ✓Tell IT: forward suspicious emails to your IT department
  • ✓Verify: if you are unsure, check back by phone
  • ✓Report: use the phishing button in your email client
  • ✓Delete: remove suspicious emails immediately

4. Technical Safeguards

Email Security Gateway

Professional email security solutions filter phishing emails automatically.

  • • Kaspersky Security for Mail Server
  • • ESET Mail Security
  • • Bitdefender Email Security
  • • Spam and malware filters
  • • URL rewriting & sandboxing

SPF, DKIM & DMARC

Email authentication prevents domain spoofing.

  • • SPF: Sender Policy Framework
  • • DKIM: DomainKeys Identified Mail
  • • DMARC: Domain-based Message Authentication
  • • Protection against forged senders
  • • Improved email deliverability

Browser Protection

Browser extensions and endpoint protection warn about phishing sites.

  • • Anti-phishing browser extensions
  • • Safe Browsing technology
  • • URL reputation checks
  • • Real-time warnings
  • • Integrated into endpoint security

5. Employee Training

The best technical solution is of no use if employees are not trained. Regular security awareness training is essential.

Training content

  • • Types of phishing and how to spot them
  • • Practical examples of real attacks
  • • How to react when you suspect something
  • • Reporting processes in the company
  • • Regular refreshers

Phishing simulations

  • • Monthly simulated phishing emails
  • • Tracking of click rates
  • • Immediate feedback on clicking
  • • Micro-learning after a wrong click
  • • Continuous improvement you can measure

6. What to do after a Successful Phishing Attack

Immediate actions

  1. Inform the IT department - report it without delay
  2. Change passwords - all affected accounts
  3. Isolate the device - disconnect it from the network
  4. Lock accounts - compromised access
  5. Document the incident - for the analysis

Follow-up

  • •Forensic analysis: determine the scope of the attack
  • •Inform affected parties: check GDPR reporting obligations
  • •Lessons learned: improve your processes
  • •Adapt training: feed the findings back in

Protect your business from phishing

Put comprehensive phishing protection in place with technical solutions and regular employee training.

Phishing at a glance

Attacks starting with phishing91%
Emails that are phishing1 in 99
Phishing emails opened30%
Clicks on malicious links12%