Lightning strike. A lightning strike is an electric discharge between the atmosphere and an earth-bound object. They mostly originate in a cumulonimbus cloud and terminate on the ground, called cloud to ground (CG) lightning.
Virus protection software is designed to prevent viruses, worms and Trojan horses from getting onto a computer as well as remove any malicious software code that has already infected a computer. Most virus protection utilities now bundle anti-spyware and anti-malware capabilities to go along with anti-virus protection.
To protect your computer from system restore and other rogue antivirus programs users should: 1  Keep their operating system and all of the installed programs up-to-date. 2  Use legitimate antivirus and anti-spyware programs. 3  Use caution when clicking on links in social networking websites and email messages.o protect your computer from system restore and other rogue antivirus programs users should: 1  Keep their operating system and all of the installed programs up-to-date. 2  Use legitimate antivirus and anti-spyware programs. 3  Use caution when clicking on links in social networking websites and email messages.