by 
 Collier, Mark D., author.
Format: 
Books
Publication Date 
 2014
Excerpt: 
Internet telephony -- Security measures.
by 
 Wells, Joseph T.
 Publisher description http://www.loc.gov/catdir/enhancements/fy1007/2010013506-d.html
Table of contents only http://www.loc.gov/catdir/enhancements/fy1007/2010013506-t.html
Table of contents only http://www.loc.gov/catdir/enhancements/fy1007/2010013506-t.html
Format: 
Books
Publication Date 
 2010
Excerpt: 
Internet fraud -- Case studies.