Computer insecurity means that your computer is not safe from people who might want to access it without your permission. This could be done by someone hacking into your computer or by accessing your computer in some other way. This could be done by someone stealing important information from your computer, like your passwords or files, or by someone using your computer to do bad things like spread viruses or other malicious software. All of this can be prevented with proper security measures like strong passwords, antivirus software, and other methods.