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Introduction

Most Internet Service Providers (ISPs) offer spam filters, virus scanners, and storage space. While they don’t supply sweeping, in-depth protection, they do complement your core security software.

What ISPs offer

ISPs are in a position to provide unique security features. For example, most integrate a spam filter into their email service—sorting out spam before it reaches your computer. The effectiveness and usability of these tools vary, but in general, they do a good job of minimizing the amount of spam that you receive.

Most email and IM services also offer some virus protection. Email and IM attachments are a common method for transmitting viruses from computer to computer. To help prevent viruses from spreading, many ISPs scan for viruses before you’re allowed to either download or attach a file.

If you use a Web-based email service like Yahoo! or Hotmail, these spam and antivirus services are particularly helpful. Because they reside on your ISP’s servers and not your home computer, these tools travel with you.

Finally, many ISPs now offer storage space on their servers. This is an excellent place to store photos and other sizeable files. It’s also an excellent way to back up all your important information. Some ISPs even offer handy tools for sharing your stored files with friends and family.

First-line protections are not enough

ISP security generally operates as a first line of defense—singling out certain threats before they have a chance to reach your computer. But it’s far from comprehensive. Their tools tend to be narrowly associated with the technologies their services provide, and don’t provide broad enough protection to block every kind of threat. That means if you rely on your ISP completely, there will be holes in your defense.

For example, attachments aren’t the only way to contract a virus. You can get them by visiting a Web page, downloading a program, or transferring an infected file. That’s why you need an antivirus solution that regularly scans your entire system for viruses—no matter where they come from. You also need a solution that can eradicate viruses should they make their way onto your system. Most ISP antivirus tools can’t do these things. And although some broadband providers offer network firewalls, they do not offer the same level of intrusion protection you get from a personal firewall. There’s also spyware detection, blended threat defense, automated backup and recovery tools, and other kinds of protection only security software can offer.