9 Tips for Safeguarding Your Accounts (7 of 9)by Katie Adams
Check for SIPC Protection. Check to make sure your brokerage accounts are protected by the Securities Investor Protection Corporation (SIPC). SIPC guarantees up to $500,000 of your invested funds (up to $100,000 in cash) in the event that your stocks or securities are stolen by a dishonest broker or the firm holding your investments fails and your assets are found missing.
Source: http://www.investopedia.com/articles/pf/08/account-protection.asp, http://tomorrowsmoney.org, http://www.katieadams.homestead.com