Source: ASIS International
The greatest threat to a business' network security is its staff. Employees frequently click on email attachments, which hackers use to infiltrate the corporate network. In addition, USB thumb drives are often embedded with keylogger software and additional viruses as handed out to employees at trade conferences. The December 2007 Microsoft Security Intelligence Report stated the amount of trojan downloaders and droppers rose by 300 percent during 2007's second half. The report discovered that malicious software is the favorite tool among criminals for targeting computers.
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