What is phishing

Phishing is a social engineering technique used to trick users into revealing confidential information such as passwords, banking details, or login credentials. The attack typically arrives via email, SMS, or fake websites that imitate legitimate services. Convinced the message is genuine, the user takes an action (clicking, downloading, entering data) that compromises the system's security.

How a phishing attack works

A phishing attack relies on three key elements:

  • A message that simulates an official communication (bank, company, online service).

  • A call to urgent or emotionally engaging action.

  • A link or attachment that leads to a fake page or installs malware.

Once the user enters their credentials or downloads the file, the attacker gains access to the data or the system.

Types of phishing

There are several variants of phishing, each with specific characteristics:

  • Spear phishing: an attack targeted at a specific person or company, with personalized content.

  • Smishing: phishing via SMS, often with links to fraudulent sites.

  • Vishing: phone-based phishing, where the attacker poses as an operator or technician.

  • Clone phishing: a replica of a legitimate communication already received, modified with malicious links.

  • QR phishing: use of forged QR codes to direct victims to malicious sites.

Why it's dangerous

Phishing is effective because it exploits human psychology: urgency, fear, trust. It requires no technical skill on the attacker's part and can target anyone, sometimes even experienced users. In a business setting it can compromise entire systems, causing financial losses and reputational damage.

How to recognize it

Common signs of phishing include:

  • Grammatical or syntax errors in the message.

  • Suspicious or slightly altered email addresses.

  • Links that don't match the official domain.

  • Requests for personal data or credentials.

  • Unexpected attachments or executables.

How to defend against phishing

Prevention is the best defense:

  • Ongoing staff training.

  • Use of multi-factor authentication (MFA).

  • Up-to-date spam filters and antivirus software.

  • Manually verifying links before clicking.

  • Periodic phishing simulations to test responsiveness.

Phishing isn't just a technical threat, it's a cultural one. Fighting it means educating, questioning, and protecting every point of access.