Analysis of changes in these preconditions for espionage gives some insight into what might be happening behind the scenes, without our knowledge, with respect to foreign espionage in the United States. Access to information or materiel that can be exchanged for money or used to achieve some other goal. Personal acquaintance with, or easy access to, persons expected to be interested in obtaining such valuable information or materiel. Starting with the widespread use of the Xerox copier in the 1950s, technological advances have made it increasingly difficult to control the distribution of sensitive information. Today's large, automated databases and interconnected networks increase exponentially the amount of information that can be collected and compromised by a single, well-placed spy.
Opportunity equals temptation.
It is now possible to commit crimes while sitting at one's computer engaged in what appears to casual observers as normal activity. More people have more access to more sensitive information than ever before. Like bank employees handling currency worth many thousands of dollars, not everyone is cut out to deal with that degree of temptation. In today's increasingly open and interconnected world, it is also easier than in the past for an interested seller of information or materiel to find a foreign buyer. As compared with the Cold War days, there are many more countries to which a seller of information can turn in search of a buyer, but the risks are still great.