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Which Browser is the Most Secure and Private?

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Google Chrome

Chrome Logo

Chrome is typically the most highly regarded for security. That sentiment is based in large part on a 2011 study which was funded by Google themselves, as it so happens. A lot has changed since then, though Google appears to be staying on top of things pretty well. Its Browserscope tests are by far the highest in this roundup. It also has the second highest malware detection rate, right behind IE.

My biggest issue with Chrome is the fact that it’s developed by Google. Google makes their billions by knowing what you do, where you are, what you buy, and what type of hemorrhoid cream you prefer. Seriously, they want to know everything about you and giving us a browser on our computer is the absolute best way to get that information. That makes Chrome a huge privacy risk in my opinion. And because it’s not entirely open source, we can’t look inside and see how it works.

Chrome Summary

  • Security: Very good
  • Privacy: I have my doubts
  • Browserscope score: 9.5/10


Mozilla Firefox

Firefox Logo

I like Firefox the most – it’s my preferred browser. I wouldn’t put it’s security in the same class as Chrome, but it’s certainly not without its own strengths. For instance, it handles SSL certificate revocation extremely well, better than any other browser.

Part of what makes it so popular is the small footprint. It’s lighter-weight than its competitors, not bundling things like Adobe Flash player in case you don’t want it. Overall, that means fewer features and less code, which presents less of an attack surface for bad guys to latch onto.

My favorite thing about Firefox is its privacy. The source code is available for perusing, meaning anyone can crack it open and see its programming. Firefox is the only browser that is fully open source. This is extremely good from a privacy standpoint because no one can hide stuff in there that we don’t want (like tracking software). Firefox’s development community (known as “Mozilla”) is a non-profit organization that exists simply to produce free quality software. That puts me at ease, knowing that Firefox is not being used as part of a larger financial agenda.

Firefox Summary

  • Security: Good
  • Privacy: Very good
  • Browserscope score: 8/10


Microsoft Internet Explorer

IE Logo

IE probably has the worst reputation for security. Unfortunately for them, that reputation isn’t entirely warranted these days but the stigma remains. The worst security issues are with older versions, like version 6 and 7. As long as you’re using version 10 or greater, you can avoid the worst problems. Microsoft has made a lot of improvements over the years.

For instance, IE has the highest detection rate of malware. That means it’s the best at keeping you from accidentally getting infected through web browsing.

However, some strange issues still remain. Like how they provide the manual ability to fake EV certification, and how they messed up the implementation of Java so that it’s very difficult to completely disable the plugin.

Not to mention, there have been plenty of severe vulnerabilities exposed in its programming over the years. Far more than any other browser. Which makes using IE a rather dubious affair when you’re always wondering what else they’ve messed up.

Additionally, IE is completely closed source. Considering that we now know Microsoft has been targeted by the NSA spying efforts, all bets are off. We don’t know what they may have been coerced into putting in their browser.

IE Summary

  • Security: Okay
  • Privacy: Maybe okay, but assume it’s not
  • Browserscope score: 7/10



Opera Logo

Opera is the quiet guy who sits in the corner minding his own business and likes it just fine, thank you very much. It has a pretty good reputation for security (though, I should mention that the underdog usually has the loudest voice of dedicated followers). I do like Opera, and for being the little guy, it’s doing things really well. But based on it having the lowest Browserscope score of the bunch (by a significant margin), I feel like I need to dock it a few points.

Opera does have a reputation of patching security vulnerabilities faster than the big guys, and it’s also been known to adopt some new security features first, before anyone else.

However, Opera is completely closed source so no one but the development team knows what goes into it. Their market share is so small that we could probably assume they don’t have an agenda or are being pushed by someone who does. But who knows in this crazy world? It’s not a bad browser and it does a lot of things well. In spite of its shortcomings, I wouldn’t hesitate to recommend it.

Opera Summary

  • Security: Good
  • Privacy: Probably okay, but we can’t know for sure
  • Browserscope score: 4.9/10


Apple Safari for Windows

Safari Logo

Safari on Windows is no longer supported. The latest version available is 5.1.7 from May 2012. It is no longer getting security updates and therefore you shouldn’t use it on Windows.

On Mac, it’s another story. Safari is still a good choice if you’re using OSX. It has a good reputation for security and is one of the earlier adopters of new features. Privacy, on the other hand, may be an issue. We don’t know if Apple has cooperated with the NSA spying efforts, but being as big as they are, I’m playing the safe side and just assuming they have.

Safari Summary (on Mac only)

  • Security: Good
  • Privacy: Maybe okay, but assume it’s not
  • Browserscope score: 3/10

Browser Comparison Chart

Browser Security Privacy *Browserscope
Chrome Very good Serious doubts 9.5/10
Firefox Good Very good 8/10
IE 10+ Okay Maybe okay 7/10
Opera Good Probably okay 4.9/10
Safari (Mac only) Good Maybe okay 3/10

*The Browserscope score is the averaged security scores for each browser family up to the time of this writing.

Internet Security