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    <title>IT Security on exitcode</title>
    <link>https://exitcode.eu/categories/it-security/</link>
    <description>Recent content in IT Security on exitcode</description>
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    <lastBuildDate>Wed, 11 Mar 2026 00:00:00 +0000</lastBuildDate>
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    <item>
      <title>The impact of data leaks</title>
      <link>https://exitcode.eu/posts/biztonsag-alapok-6/</link>
      <pubDate>Wed, 11 Mar 2026 00:00:00 +0000</pubDate>
      <guid>https://exitcode.eu/posts/biztonsag-alapok-6/</guid>
      <description>&lt;h1 id=&#34;what-happens-if-your-account-is-hacked---the-impact-of-data-leaks&#34;&gt;&#xA;  What happens if your account is hacked? - The impact of data leaks&#xA;  &lt;a class=&#34;heading-link&#34; href=&#34;#what-happens-if-your-account-is-hacked---the-impact-of-data-leaks&#34;&gt;&#xA;    &lt;i class=&#34;fa-solid fa-link&#34; aria-hidden=&#34;true&#34; title=&#34;Link to heading&#34;&gt;&lt;/i&gt;&#xA;    &lt;span class=&#34;sr-only&#34;&gt;Link to heading&lt;/span&gt;&#xA;  &lt;/a&gt;&#xA;&lt;/h1&gt;&#xA;&lt;p&gt;A data leak doesn&amp;rsquo;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.&lt;/p&gt;&#xA;&lt;h2 id=&#34;how-does-data-get-leaked&#34;&gt;&#xA;  How does data get leaked?&#xA;  &lt;a class=&#34;heading-link&#34; href=&#34;#how-does-data-get-leaked&#34;&gt;&#xA;    &lt;i class=&#34;fa-solid fa-link&#34; aria-hidden=&#34;true&#34; title=&#34;Link to heading&#34;&gt;&lt;/i&gt;&#xA;    &lt;span class=&#34;sr-only&#34;&gt;Link to heading&lt;/span&gt;&#xA;  &lt;/a&gt;&#xA;&lt;/h2&gt;&#xA;&lt;p&gt;When a website&amp;rsquo;s database is hacked, the user data stored in it is leaked - email addresses, passwords, and possibly personal information. This data is usually:&lt;/p&gt;</description>
    </item>
    <item>
      <title>Two-factor authentication - 2FA</title>
      <link>https://exitcode.eu/posts/biztonsag-alapok-4/</link>
      <pubDate>Mon, 09 Mar 2026 00:00:00 +0000</pubDate>
      <guid>https://exitcode.eu/posts/biztonsag-alapok-4/</guid>
      <description>&lt;h1 id=&#34;what-is-two-factor-authentication-2fa-and-why-is-it-important&#34;&gt;&#xA;  What is two-factor authentication (2FA) and why is it important?&#xA;  &lt;a class=&#34;heading-link&#34; href=&#34;#what-is-two-factor-authentication-2fa-and-why-is-it-important&#34;&gt;&#xA;    &lt;i class=&#34;fa-solid fa-link&#34; aria-hidden=&#34;true&#34; title=&#34;Link to heading&#34;&gt;&lt;/i&gt;&#xA;    &lt;span class=&#34;sr-only&#34;&gt;Link to heading&lt;/span&gt;&#xA;  &lt;/a&gt;&#xA;&lt;/h1&gt;&#xA;&lt;p&gt;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.&lt;/p&gt;&#xA;&lt;h2 id=&#34;what-are-the-two-factors&#34;&gt;&#xA;  What are the two factors?&#xA;  &lt;a class=&#34;heading-link&#34; href=&#34;#what-are-the-two-factors&#34;&gt;&#xA;    &lt;i class=&#34;fa-solid fa-link&#34; aria-hidden=&#34;true&#34; title=&#34;Link to heading&#34;&gt;&lt;/i&gt;&#xA;    &lt;span class=&#34;sr-only&#34;&gt;Link to heading&lt;/span&gt;&#xA;  &lt;/a&gt;&#xA;&lt;/h2&gt;&#xA;&lt;p&gt;Authentication can be built from three possible components:&lt;/p&gt;</description>
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    <item>
      <title>Password managers - how do they work?</title>
      <link>https://exitcode.eu/posts/biztonsag-alapok-3/</link>
      <pubDate>Sat, 07 Mar 2026 00:00:00 +0000</pubDate>
      <guid>https://exitcode.eu/posts/biztonsag-alapok-3/</guid>
      <description>&lt;h1 id=&#34;password-managers---how-do-they-work-and-why-should-you-trust-them&#34;&gt;&#xA;  Password managers - how do they work and why should you trust them?&#xA;  &lt;a class=&#34;heading-link&#34; href=&#34;#password-managers---how-do-they-work-and-why-should-you-trust-them&#34;&gt;&#xA;    &lt;i class=&#34;fa-solid fa-link&#34; aria-hidden=&#34;true&#34; title=&#34;Link to heading&#34;&gt;&lt;/i&gt;&#xA;    &lt;span class=&#34;sr-only&#34;&gt;Link to heading&lt;/span&gt;&#xA;  &lt;/a&gt;&#xA;&lt;/h1&gt;&#xA;&lt;p&gt;Previous posts have shown that every account needs a unique, strong password. But who can remember thirty different, random passwords? No one. That&amp;rsquo;s what password managers are for.&lt;/p&gt;&#xA;&lt;h2 id=&#34;what-is-a-password-manager&#34;&gt;&#xA;  What is a password manager?&#xA;  &lt;a class=&#34;heading-link&#34; href=&#34;#what-is-a-password-manager&#34;&gt;&#xA;    &lt;i class=&#34;fa-solid fa-link&#34; aria-hidden=&#34;true&#34; title=&#34;Link to heading&#34;&gt;&lt;/i&gt;&#xA;    &lt;span class=&#34;sr-only&#34;&gt;Link to heading&lt;/span&gt;&#xA;  &lt;/a&gt;&#xA;&lt;/h2&gt;&#xA;&lt;p&gt;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 &lt;strong&gt;master password&lt;/strong&gt;, and you don&amp;rsquo;t need to remember anything else.&lt;/p&gt;</description>
    </item>
    <item>
      <title>Password reuse</title>
      <link>https://exitcode.eu/posts/biztonsag-alapok-2/</link>
      <pubDate>Fri, 06 Mar 2026 00:00:00 +0000</pubDate>
      <guid>https://exitcode.eu/posts/biztonsag-alapok-2/</guid>
      <description>&lt;h1 id=&#34;why-is-it-dangerous-to-use-the-same-password-everywhere&#34;&gt;&#xA;  Why is it dangerous to use the same password everywhere?&#xA;  &lt;a class=&#34;heading-link&#34; href=&#34;#why-is-it-dangerous-to-use-the-same-password-everywhere&#34;&gt;&#xA;    &lt;i class=&#34;fa-solid fa-link&#34; aria-hidden=&#34;true&#34; title=&#34;Link to heading&#34;&gt;&lt;/i&gt;&#xA;    &lt;span class=&#34;sr-only&#34;&gt;Link to heading&lt;/span&gt;&#xA;  &lt;/a&gt;&#xA;&lt;/h1&gt;&#xA;&lt;p&gt;It&amp;rsquo;s easier to remember one password. That&amp;rsquo;s understandable. But if you use the same password for your banking app, your email, and a forum you haven&amp;rsquo;t visited in a long time, a single data breach is enough to compromise all your accounts.&lt;/p&gt;&#xA;&lt;h2 id=&#34;what-is-credential-stuffing&#34;&gt;&#xA;  What is credential stuffing?&#xA;  &lt;a class=&#34;heading-link&#34; href=&#34;#what-is-credential-stuffing&#34;&gt;&#xA;    &lt;i class=&#34;fa-solid fa-link&#34; aria-hidden=&#34;true&#34; title=&#34;Link to heading&#34;&gt;&lt;/i&gt;&#xA;    &lt;span class=&#34;sr-only&#34;&gt;Link to heading&lt;/span&gt;&#xA;  &lt;/a&gt;&#xA;&lt;/h2&gt;&#xA;&lt;p&gt;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 &lt;strong&gt;credential stuffing&lt;/strong&gt;.&lt;/p&gt;</description>
    </item>
    <item>
      <title>Why Password123 Is Never Enough</title>
      <link>https://exitcode.eu/posts/biztonsag-alapok-1/</link>
      <pubDate>Sat, 28 Feb 2026 19:50:39 +0000</pubDate>
      <guid>https://exitcode.eu/posts/biztonsag-alapok-1/</guid>
      <description>&lt;h1 id=&#34;why-password123-is-not-a-good-password&#34;&gt;&#xA;  Why &amp;ldquo;Password123&amp;rdquo; Is Not a Good Password&#xA;  &lt;a class=&#34;heading-link&#34; href=&#34;#why-password123-is-not-a-good-password&#34;&gt;&#xA;    &lt;i class=&#34;fa-solid fa-link&#34; aria-hidden=&#34;true&#34; title=&#34;Link to heading&#34;&gt;&lt;/i&gt;&#xA;    &lt;span class=&#34;sr-only&#34;&gt;Link to heading&lt;/span&gt;&#xA;  &lt;/a&gt;&#xA;&lt;/h1&gt;&#xA;&lt;p&gt;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.&lt;/p&gt;&#xA;&lt;h2 id=&#34;how-are-passwords-cracked&#34;&gt;&#xA;  How Are Passwords Cracked?&#xA;  &lt;a class=&#34;heading-link&#34; href=&#34;#how-are-passwords-cracked&#34;&gt;&#xA;    &lt;i class=&#34;fa-solid fa-link&#34; aria-hidden=&#34;true&#34; title=&#34;Link to heading&#34;&gt;&lt;/i&gt;&#xA;    &lt;span class=&#34;sr-only&#34;&gt;Link to heading&lt;/span&gt;&#xA;  &lt;/a&gt;&#xA;&lt;/h2&gt;&#xA;&lt;p&gt;Attackers do not need to guess your password. Instead, they use programs that automatically try &lt;strong&gt;millions of combinations per second&lt;/strong&gt;. This method is called a &lt;strong&gt;brute force&lt;/strong&gt; attack.&lt;/p&gt;</description>
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