The Securities and Exchange Commission on Monday suspended trading of 61 microcap shell companies that the agency said were «ripe for fraud.» The SEC said the thinly-traded companies have great potential to be «hijacked» by fraudsters who will falsely hype the stock to portray it as a thriving company in «pump and dump» schemes.
http://www.sec.gov/litigation/suspensions/2013/34-69678.pdf