Double Protection: Why Multi-Factor Authentication (MFA) is Indispensable

We shed light on the various types of second factors, from SMS codes to physical security keys. Learn how MFA nipped attacks in the bud, which apps you should use, and why the short delay during login is a small price for the enormous security you gain from it. Make your accounts impregnable. It's time to put up the second wall.

True multi-factor authentication combines at least two of three different categories:

• Something you know: Your password or a PIN.
• Something you have: Your smartphone, a hardware token (like Yubikey), or a bank card.
• Something you are: Your fingerprint, your face (FaceID), or your voice.
  
  In most cases, we use 'knowledge' (password) and 'possession' (smartphone). The genius of it: a hacker on the other side of the world might have your password (knowledge), but they don't have your physical smartphone (possession). Without both factors simultaneously, access to your account is impossible. This makes 99.9% of all automated attacks ineffective. MFA is thus the most powerful tool in your personal security arsenal.

Authenticator apps like Google Authenticator, Microsoft Authenticator, or Authy are significantly more secure. These apps generate a new, time-based code locally on your device every 30 seconds. Since these codes are not sent over the mobile network, they cannot be intercepted. At SavePaper.work, we strongly recommend switching to such apps. They also work without mobile reception and offer a significantly higher level of protection. For maximum security for extremely sensitive accounts (like email or banking), physical USB security keys (U2F/FIDO2) are the absolute top class.

Your email account is the master key to your entire digital life. Almost every service offers a 'forgot password' function that sends a link to your email address. If a hacker has access to your email account, they can simply reset the passwords of almost all other accounts (Amazon, PayPal, social media).

Therefore, the rule is: the email account must be secured with MFA first. It is the most important digital fortress you own. Without MFA on the email account, your entire security strategy is full of holes. Take the 5 minutes to activate this function at Gmail, Outlook, or your respective provider. It's the best investment of time in your security you'll ever make. SavePaper.work supports you in organizing these critical accesses.

We often hear the argument that MFA slows down the login process. Yes, it takes a few seconds longer to enter a code or confirm a notification on the phone. But compare this effort with the stress and potential financial damage of a hacked account.

Most services also allow you to save 'trusted devices'. This means that on your own laptop, you are only asked for the second factor every 30 days or only during unusual activities. Thus, comfort is maintained in everyday life, while security is maximized during accesses from third-party devices. Don't consider MFA as an obstacle, but as a reassuring feeling of control. It's the modern form of digital responsibility.

The biggest concern with MFA is the loss of the second factor (e.g., if the phone is stolen). Here, precaution is crucial:

1. Backup Codes: Almost every service offers unique backup codes when setting up 2FA. Print these out and keep them in a safe place (not on the phone!).
2. Second Device: Set up your authenticator app (if possible) on a second device (tablet or old phone).
3. Recovery Options: Provide alternative email addresses or phone numbers for emergencies.
   
   If you take these precautions, you don't have to be afraid of being locked out. Digital security also means being prepared for the worst-case scenario. At SavePaper.work, we help you archive this important information securely and orderly.