Microsoft usually issues these updates on a monthly cycle. If you buy a used computer with Windows 7 make sure Windows 7 is installed.
Strong Passwords - people often overlook this but having well thought through passwords is an important element of your computer security. The best bet here is to purchase a security package which includes firewall and anti virus software as a minimum. Top brands include McAfee and Symantec Norton products. A firewall monitors the inbound internet traffic passing through the ports of your computer. Better products also monitor outbound traffic from your computer to the internet. A company called Zone Labs offer a great free firewall product called Zone Alarm which should be used as a minimum. Anti Spyware Tool - this software is the last piece in your basic internet security set up. Good free software includes Microsoft's Windows Defender, Spybot S&D or Ewido Anti-Malware. Ewido Anti-Malware is frequently recommended in computer help forums.
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