Botnet
A report by Commtouch and PandaLabs in the second quarter of detected an increase of zombie computers worldwide.
zombie computers are computers infected by 'bots' and controlled remotely by cyber criminals
. 'Bot is short for the word robot. Are small programs that are put on computers with the intention of allowing cyber criminals to take control of them. Botnets, or 'botnets', are groups of computers infected by bots together to act jointly. The phisher instructs those computers, for example, downloading a new threat on your computer, display advertising to the user, launch denial service or, above all, sending spam. The
report by PandaLabs
Commtouch and shows that during the second quarter of Turkey has become the largest number of zombie computers in the world with an eleven percent of the total, closely followed by Brazil with 8.4 percent and Russia with 7.4 percent. United States, which in the first quarter had a five per cent of all zombies, has slipped to ninth place, representing only 4.3 percent of the total.
This large number of "zombies" remains the main cause of the avalanche of spam experienced by consumers and businesses, and is that between April and June 74 percent of mail received in the mailbox was spam. Luis Corrons, technical director of PandaLabs
has referred to the study by Nucleus Research, an independent consultant, who has estimated the cost at $ 712 per employee, after receiving an e-mail and deleting it, without even opening it. 
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