Definition: A computer virus is a malicious software program loaded onto a user’s computer without the user’s knowledge and performs malicious actions.
Do you recognise any of these symptoms below?
#1 SLOW START UP AND SLOW PERFORMANCE
If your PC is taking longer than normal to start or programs are taking ages to open, then your PC may have a virus.
#2 CRASHES AND ERROR MESSAGES
If programs start opening and closing automatically, your system freezes or shuts down for no reason, or you see odd error messages, then you may have a virus infection.
#3 UNEXPECTED POP-UP WINDOWS
Unexpected onscreen ads are a typical sign of a virus infection. Not only are they annoying, other malware may lurk inside poised to wreck further havoc.
Never click on a suspicious pop-up – even if it says ‘a virus was detected’. This is an example of rogue-ware, which asks you to pay for a program to remove a fake virus but may in fact allow even more malware to be downloaded.
#4 SUSPICIOUS HARD DRIVE ACTIVITY
An excessively active hard disk where it makes continual noise or constantly spins – even though you’re not using your computer nor have any programs running – can be a sign your PC is infected with a virus.
#5 LACK OF STORAGE SPACE
If you suddenly find yourself devoid of storage space on your hard drive, a virus may be doing its utmost to make your computer unusable.
#6 MISSING FILES
Some malware cause problems by deleting files and programs or moving them around. Some may encrypt your files so you aren’t able to open them.
#7 HIGH NETWORK ACTIVITY
If your internet connection is very active even when you’re not using it, a virus may be busy sending information back and forth across the internet.
#8 EMAIL IS HIJACKED
If friends start receiving emails or instant messages from your social networks asking them to click on an attachment or link, it’s likely that a virus is attempting to spread to other computers via your accounts. If so, change your passwords immediately.
#9 BROWSER WOES
Your web browser becoming sluggish, your home page changing or being redirected to unusual websites are all warning signs of a computer virus infection.
#10 SECURITY ATTACKS
Some viruses are designed to disable your computer’s protection. So, if you can’t open or install an anti-virus program or your firewall, your computer may be infected.