When you operate a server cluster on an internet node security is a fact of life. I recall my first encounter with people trying to gain undue access and how it caused a gut reaction to prevent all such activity in the future.
Thusly, I became somewhat of an expert in countermeasures and firewalls and now if I choose to exclude you this is what will be. Knowing a little scripting will help things utilize automation so everything doesn't have to be some manual operation.
Today is Computer Security Day.
It goes down yearly each November 30 in an effort to raise public awareness about using computers safely and protecting them from threats.
People are urged to take steps to secure their personal information, such as strong password implementations and multifactor authentication.
I personally find multifactor authentication abhorrent.
So the aim is protecting data systems, networks, and information from theft, damage, and unauthorized access.
To maintain computer security, you should use strong passwords, keep software updated, install antivirus software, and be cautious of phishing scams, suspicious attachments, and public WiFi. This being said I keep wondering why people continually attempt to access my wireless node when it's a known threat.
Goals are protection, confidentiality, integrity, availability of data.
Utilizing strong passwords, current software revisions, and antivirus packages and awareness of social engineering threats like phishing, malware, and sufficient protected wifi and adequate backups all go far toward maintaining computer security.