It's Time to Finally Drop Internet Explorer 6

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I understand that it can be a daunting undertaking to ensure that all commercial software and custom internal applications used by the organization will work properly under a newer Web browser--or find and implement alternate applications that will. Continuing to run IE6, though, is like leaving your car unlocked with the keys in the ignition.

Internet Explorer 8 Wins Against Social-Engineering Attacks

IE8 is the number one Web browser and blew the competition away in NSS Labs testing for guarding against socially-engineered malware.
Artwork: Chip Taylor
A recent report from NSS Labs illustrates why moving from IE6 (or even IE7) to IE8 should be a priority for IT administrators. It also contradicts the IE-bashing wisdom and shows that IE8 is actually the most secure Web browser when it comes to protecting systems against social networking and Web 2.0 attacks.

Socially-engineered malware attacks--or phishing attacks--pose an increasing risk to organizations. These attacks use social engineering and exploit the trust of the end-user to compromise, steal, or damage sensitive information.

The NSS Labs report claims "53 percent of malware is now delivered via Internet download versus just 12 percent via e-mail according to statistics from Trend Micro. And, according to Microsoft, as many as 0.5 percent of the download requests made through Internet Explorer 8 are malicious."

NSS Labs tested five Web browsers (IE, Firefox, Safari, Chrome, and Opera) over the course of 18 days. Testing was conducted 24x7 during the evaluation period, attacking the browsers with more than 550 socially-engineered malware links.

This was the third time NSS Labs has conducted these Web browser security tests. According to the report, "Over the three tests, Windows Internet Explorer 8 provided the best protection against socially-engineered malware and was the only browser that improved its block rate test-over-test, successfully stopping 69 percent, 81 percent, and 85 percent of threats in each respective test."

Talbot explained that there is nothing magical that makes any Web browser inherently superior to the rest. "Applications and operating systems from any vendor typically don't have anything special in terms of their code that makes them impervious to vulnerabilities and therefore attacks."

"It really comes back to the fact that the more popular software is the more it will be targeted. Thus, if everyone in the world switched to some obscure browser with very little market share, attackers would start targeting it. Attackers go where the money is, and the money is wherever the people are," summed up Talbot.

Tyler Reguly, lead research engineer for nCircle, also responded by e-mail and expressed similar sentiment that the browser itself is not the issue. "The insecurity these days comes from a lack of ‘smart browsing' or ‘safe browsing'. People are too willing to browse the seedy underbelly of the internet. Many people wouldn't walk down a dark alley and purchase items from a guy sitting in the dark, but they're willing to visit (and purchase from) websites that are the cyber-equivalent."

To sum it up--stop using Internet Explorer 6. You will be doing yourself, your company, and the rest of the world that shares the Web with you a tremendous favor. And, as long as you're upgrading away from IE6, IE8 offers a solid Web browser to switch to.

Other Web browsers such as Firefox or Chrome would also be exceptionally more secure than IE6, however organizations that are used to managing IE through Group Policy and updating it using the tools provided by Microsoft need to consider how supporting and patching alternate browsers will fit into the network infrastructure.

R.I.P. IE6. We knew thee (too) well.

Tony Bradley is co-author of Unified Communications for Dummies. He tweets as @Tony_BradleyPCW. You can follow him on his Facebook page, or contact him by email at

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