April 5, 2016 

To whom it may concern: 

I am writing on behalf of Mr. Weiwu Zhao. Mr. Zhao stated the following conditions about his computer seized by the police: 

1. Windows XP was the operating system installed on the computer. Windows XP was no 

longer supported by Microsoft and thus has bad security. 2. The computer has no login password. 3. Only free versions of anti-virus software, including Kingsoft Antivirus and 360 Total 

Security, were installed on the computer. 4. Several popular search engines, including Google, Emule, and Baidu, were used on the 

computer. No passwords were required to use the search engines. 

We believe a computer working under such conditions is very vulnerable to malicious hacker attacks. 

Sincerely, 

yang 

Yong Zhang, Ph.D 

Associate Professor of Computer Science Kutztown University of PA Kutztown, PA 19530 Office: 250 Old Main Phone: (484) 646-4293