1. Check if you are part of a network Botnet
First use an antivirus program to scan it computer and detect any malware.
If the program you are using is interrupted during a scan, you may be infected with Emotet. In this case, you may need to run your computer in safe mode and try scanning again.
Change the password to e-mail by choosing a more complex one. Avoid opening emails from unrecognized senders. If you receive emails with links or attachments, do not interact with them. If someone you know sends you a weird email with a link or attachment, confirm that they sent it before you opened it.
2. Use this extension to make all your favorite sites more secure
When browsing the web, be sure to visit websites starting with “HTTPS: //”. This tells you that the site is transmitting data over a secure encrypted connection. You will also see a padlock-shaped icon in the address bar of your browser. However, if a site does not start with this, you can use the extension HTTPS Everywhere, for greater security.
3. Choose a physical key that cannot be broken
Security keys are a natural way to verify your identity online. These little devices USB act as keys for your online accounts and must be connected to your computer when you log in. The Yubikey and Google Titan are two of the most popular brands of security keys and offer products that work with computers and mobile devices.
4. Choose a security key for your bank
Some banks also offer physical security keys, which act as an extra level of protection for him account your. Instead of using a code sent to you by your bank, you will use a special one device associated with your banking application. As not all banks offer physical tokens or keys, contact your bank to determine what security options are available for your account.
5. Check your firewall and router for exposed ports
Your computer firewall is designed to provide security by preventing intruders from accessing it system and your network. Even if an attacker knows your computer's location and IP address, it will not be able to reach you if the firewall is set up correctly.
To check your computer firewall:
Open them Open Settings> Update & Security.
Select Windows Security from the left menu.
Select Firewall & Network Protection to open the firewall menu. Your system will tell you if the firewall is enabled or not. If it is disabled, you can enable it or reset the settings by clicking Restore firewalls to default.