Hardly a week goes by without a new report of some massive data theft that has put financial information, trade secrets or government records into the hands of computer hackers. The best defense against these attacks is clear: strong data encryption and more secure technology systems. U.S. intelligence agencies hold a different view. James Comey, the FBI director, is lobbying Congress to require that electronics manufacturers create intentional security holes - so-called back doors - that would enable the government to [easily] access data on every American's cellphone and computer. Building a back door into every cellphone, tablet, or laptop means deliberately creating weaknesses that hackers and foreign governments can exploit. What these officials are proposing would be bad for personal data security and bad for business. Built-in back doors have ... disastrous results. The U.S. House of Representatives recognized how dangerous this idea was and in June approved [an] amendment [to] prohibit the government from mandating that technology companies build security weaknesses into any of their products. I introduced legislation in the Senate to accomplish the same goal. Advances in technology always pose a new challenge to law enforcement agencies. But curtailing innovation on data security is no solution, and certainly won't restore public trust in tech companies or government agencies.