Browsing in Internet is becoming more and more dangerous in today's world. Hackers are trying to get any information out of you, i.e. Credit Cards, Social Security number, your Bank Accounts, passwords to sites which you frequently visit or other important information you store on your computer. They can easily get to your physical address and do further damage to you known as "identity theft". Websites advertising services track and log your online activities by your IP, and later send you "special offers" (aka. spam).