单项选择题

Owning a web page sounds cool. You can be the master of the page, putting up your favorite hot sports, news, pop music and latest Hollywood movies, all of which can be found quite easily on the net. But what if the services expose your personal data like birthday, health condition, bank account, ID card and even your personal shortcomings to commercial websites who will use them to strengthen e-marketing
Worse, some business players may pass you by and sell your personal data to other firms to get a profit. The rapid growth of the Internet has led to individual privacy abuse. It will be a headache in the future. Cases are showing up recently that some unethical players earn big money from selling individual profiles on-line. A leading US- based net firm has been spotted using technology to track down every action netizens (网民)make while shopping through its website.
Zhang Jing, a 27-year-old staff member at a local lifestyle website, woke up one morning and found her emails were stuffed with junk emails, unwelcome on-line commercial ads and a large amount of sexual stuff. "My mailbox gets full of this awful stuff and I feel sick, " said Zhang. "Laws should be set up as soon as possible, otherwise the problem will get worse. "
However, as the Internet goes beyond national borders, protection efforts will be limited without global cooperation. It needs global commitment and a wide respect for the rules of the game. Meanwhile, experts have called for the development of technology and software such as a firewall to protect netizens’ privacy. Software that can track down firms who are using technology to follow on-line shopping activities and bar firms who abuse personal data will be available on the market soon. Firms plotting to make an illegal profit from the abuses will shoot themselves in the foot in the end and netizens themselves should be well aware of the issue and resort to legal actions to solve the problem.
From the passage we understand that ______.