Rainbow Technologies

For years the fear of software piracy has brought the giants of technology to the door of Rainbow Technologies Inc., which protects programs with matchbook-size devices that plug into the backs of personal computers. Buyers such as Microsoft Corp., Borland International and Hewlett-Packard Co. include the keys with software programs that they sell, particularly those marketed in foreign countries where intellectual property standards are lower or are not enforced.

The Irvine provider of Internet and e-commerce security software reported third-quarter net income of $4.6 million, or 17 cents a share, more than double the $2.1 million, or 9 cents a share, posted for the year-ago period. Revenue rose 45% to a record $43.8 million.

Rainbow Technologies Inc., Irvine provider of Internet security software, has declared a 2-for-1 stock split, payable Oct. 23 to shareholders of record Oct. 9. The stock on Tuesday moved up $3.06 a share, or 8.3%, to $39.81 in Nasdaq trading. The shares have gained more than 71% this year.