Basics on exitcode

Why are software updates important?

Wed, 18 Mar 2026 00:00:00 +0000

Why are software updates important? Vulnerabilities explained simply Link to heading

The “Update later” button is one of the most frequently clicked buttons in our digital lives. This is understandable, because updates interrupt our work, take time, and don’t seem to bring any visible changes. However, something quite different is happening in the background.

What is a vulnerability? Link to heading

All software contains bugs. Some of these are merely inconveniences, usually resulting in the program freezing or displaying something incorrectly. Other bugs, however, represent security vulnerabilities: an attacker can exploit them to gain access to the device, steal data, or run malicious code.

How Does HTTPS Work?

Mon, 16 Mar 2026 00:00:00 +0000

How does HTTPS work, and why is the padlock icon important? Link to heading

The small padlock icon in your browser’s address bar isn’t just for decoration. Behind it lies an encryption system that protects your data during transmission. However, you need to know what the icon does and doesn’t mean.

HTTP vs. HTTPS - what’s the difference? Link to heading

HTTP (HyperText Transfer Protocol) is the web’s basic protocol. This is how your browser communicates with the server when you open a page. Every request and response travels across the network as plain text, without encryption. This means that if someone is monitoring the network, for example, on a public Wi-Fi network, they can see exactly what you sent and what you received. Passwords, forms, everything.

What do websites know about you?

Thu, 12 Mar 2026 00:00:00 +0000

What do websites know about you? — Cookies, trackers, fingerprinting Link to heading

Every time you visit a website, data changes hands - most of the time without you even realizing it. It’s not just about what you search for, modern tracking techniques go much deeper than that.

Cookies — the most well-known tool Link to heading

A cookie is a small text file that the website you’re visiting stores in your browser. Its original purpose is useful: it remembers whether you’re logged in, what’s in your cart, and which language you’ve selected, so you don’t have to re-enter this information every time.

The impact of data leaks

Wed, 11 Mar 2026 00:00:00 +0000

What happens if your account is hacked? - The impact of data leaks Link to heading

A data leak doesn’t just mean that someone else knows your password. The consequences can spread like a chain reaction. Often, they strike months or years later, when we have long forgotten the original event.

How does data get leaked? Link to heading

When a website’s database is hacked, the user data stored in it is leaked - email addresses, passwords, and possibly personal information. This data is usually:

Two-factor authentication - 2FA

Mon, 09 Mar 2026 00:00:00 +0000

What is two-factor authentication (2FA) and why is it important? Link to heading

Even if someone obtains your password, it should not be enough to gain access. Two-factor authentication provides exactly that - a second barrier that cannot be crossed without knowing the password.

What are the two factors? Link to heading

Authentication can be built from three possible components:

Password managers - how do they work?

Sat, 07 Mar 2026 00:00:00 +0000

Password managers - how do they work and why should you trust them? Link to heading

Previous posts have shown that every account needs a unique, strong password. But who can remember thirty different, random passwords? No one. That’s what password managers are for.

What is a password manager? Link to heading

A password manager is an encrypted storage device - like a safe where all your passwords are securely locked away. It can be opened with a single master password, and you don’t need to remember anything else.

Password reuse

Fri, 06 Mar 2026 00:00:00 +0000

Why is it dangerous to use the same password everywhere? Link to heading

It’s easier to remember one password. That’s understandable. But if you use the same password for your banking app, your email, and a forum you haven’t visited in a long time, a single data breach is enough to compromise all your accounts.

What is credential stuffing? Link to heading

When a website is hacked, the leaked username-password pairs quickly end up on the dark web. Attackers use automated programs to try these lists on other sites - this is called credential stuffing.

Why Password123 Is Never Enough

Sat, 28 Feb 2026 19:50:39 +0000

Why “Password123” Is Not a Good Password Link to heading

Many people use simple passwords because they are easy to remember. That is understandable - but unfortunately it is a serious risk. In this article you will learn what happens behind the scenes, how to choose a strong password, and a method that makes strong passwords actually memorable.

How Are Passwords Cracked? Link to heading

Attackers do not need to guess your password. Instead, they use programs that automatically try millions of combinations per second. This method is called a brute force attack.