What are the risks of opening email attachments?
Risks of opening email attachments
- Web Bugs. Most people regularly receive web bugs in their inbox.
- Mass Mailing Worms. Mass mailing worms (also known as “e-mail worms”) can spread rapidly from user to user, often before people are aware of what is happening.
- Computer Virus.
- Trojan Horse.
- Malicious Executable.
Why should we worry about email attachments?
Be wary of unsolicited attachments, even from people you know. Just because an email message looks like it came from someone you know does not mean that it did. Many viruses can “spoof” the return address, making it look like the message came from someone else.
How to send email from command line in CentOS?
As a matter of fact, we can now send and receive email from the command line. If your CentOS 8/RHEL 8 server has a user account called user1, then the email address for this user is [email protected]. You can send an email to root user [email protected]. You can also send emails to Gmail, yahoo mail or any other email service.
What can I do to protect my CentOS server?
Let explore a few steps that you can take to harden and secure CentOS 8 / RHEL 8 server and thwart hacking attempts. As a security-minded Linux user, you wouldn’t just allow any traffic into your CentOS 8 / RHEL 8 system for security reasons.
How to keep CentOS up to date with security patches?
Keep Linux kernel in sync with the latest security patches and all the installed software up-to-date with the latest versions by issuing the below command: 12. Disable Ctrl+Alt+Del
How to set up Postfix server in CentOS 8?
To make Postfix perform better and get the most out of Postfix, you need to properly set up your CentOS 8/RHEL 8 Server. By default, Postfix uses your server’s hostname to identify itself when communicating with other MTAs. Hostname can have two forms: