For the most part, dial-up connections are harder to hack because they are not active for very long. Because these connections are always live on the Internet they are much easier for hackers to target. Moreover, these connections often have fixed system addressing schemes which make it easier for a hacker to target you specifically. To make web surfing more interactive, these three technologies expand the capabilities for web browsers. However, they can also serve as a tools for hackers.
Cookies are rather safe.
A cookie is a very small text file placed on your computer so a web site can track your use of the site. For some on-line shopping and interactive sites, cookies are required to track the web pages you visit. Most current browsers allow you to disable the cookie features. However, this may make you unable to view some web sites or purchase items on-line. Hackers generally do not use cookies for hacking.