国家如何提高网络安全,求一篇关于介绍网络安全的英文文章，越长越好，详细些！谢谢 100分

国家如何提高网络安全,求一篇关于介绍网络安全的英文文章，越长越好，详细些！谢谢 100分

Internet security problems
Your email does not fly directly from your computer to the
intended recipient’s computer. It goes through several nodes and leaves
behind information as it passes. It can be accessed all along the path (not only in/from your country!)
Someone could be looking over your shoulder as you type. This is
especially problematic in internet cafes. If you are connected to a
network, your email may be accessible to everyone else in the office.
Your system administrator may have special administrative privileges to
access all emails.
Your internet service provider (ISP) has access to your emails, and
anyone with influence over your ISP may be able to pressure it into
forwarding them copies of all your emails or to stop certain emails from
getting through.
As they pass through the internet, your emails flow through hundreds
of insecure third-parties. Hackers can access email messages as they
pass. The ISP of your intended recipient may also be vulnerable, along
with the network and office of your intended recipient.
Basic internet security
Viruses and other problems, such as Trojan Horses or Trojans, can
come from anywhere; even friends may unknowingly spread viruses. Use a
good anti-virus program and keep up-to-date with automatic online
updating. New viruses are constantly being created and discovered, so
check out the Virus Information Library at ......余下全文>>