Antivirus Tip: Look for an anti-virus program that is easy to use, but offers the level of protection you need.

Antivirus Tip: A computer virus replicates itself by changing the code in other programs to copy itself across a computer system.

Antivirus Tip: There are several different types of viruses and they all behave differently, including how they spread: virus, trojan and worm.

Antivirus Tip: No single anti-virus program can provide 100 per cent protection. Using two or three programs to provide a wide security net is preferable.

Antivirus Tip: Normal viruses may start as annoying pop-ups, but trojans that prevent you from restarting your PC are admin-level and require experts to remove.

Antivirus Tip: Not all files picked up by your anti-virus are malicious. Some are just background system processes. Adjust your AV settings to overlook these.

Antivirus Tip: Anti-virus and anti-malware are often used interchangeably, but both can help detect computer viruses and quarantine suspicious files.

Antivirus Tip: Do not install too many real-time protection and anti-virus programs, as they will drain your system resources and slow down productivity.

Antivirus Tip: If you suspect your PC or laptop has been infected, immediately run a full anti-virus system scan and record what caused the infection.

Antivirus Tip: Should your PC become infected with ransomware, alert the authorities and your nearest IT expert to assist immediately. Do not pay the ransom.