The
growth of the Internet has meant that "black hat" hacking
has evolved from malicious pranks to the work of sophisticated
organized crime groups and terrorists involved in identity theft,
fraud, extortion and money-laundering.
The growth of e-commerce means that end-users risk exposing
sensitive personal information via insecure software to these types
of criminals.
The use of proprietary closed source software means that they may
not easily find out about or patch security vulnerabilities unless
and until the vendor releases a fix.