Protect Yourself on Facebook
Tips on protecting yourself and your PC as you use Facebook, Twitter and other social networking sites.
The whipped cream is out of the can. Now what can we do about it?
Like so many millions of others, Ive found Facebook and Twitter in the last few months, in addition to the more traditional professional networking sites Ive used for years, like LinkedIn. But what started as idle curiosity soon grew into addiction.
Yes, my name is Ken and Im addicted to
So, how secure are these sites?
Ive experienced several classic Web security issues in each of the sites I frequent, and without a doubt there remain many vulnerabilities to be discovered. But that hasnt stopped me from using them.
Like any decision involving risk, Ive studied the issues, minimized my own exposure, and Im getting on with what I care to do.
Lets start by looking at the issues briefly.
Web apps:Well, for starters, they are Web applications, and as such theyre potentially vulnerable to a plethora of issues, from the OWASP Top-10 and beyond and yes, there are far more than 10.
And dont think for a moment that all web application vulnerabilities solely place the application at risk. Many also put the apps users at risk: cross-site scripting (XSS), cross-site request forgery (CSRF), and others can be used to attack the users quite easily.
As a user of a social networking site, youre placing your (and your employers) data at risk.
Active content:Long-time readers of this column (hi Mom!) have heard me talk about the dangers of active content many times.
The bottom line: by allowing active content into your browser, you are trusting someone elses code to run on your computer safely. Well, whats the big deal? We do that all the time. Well, now the code is dynamic and maintained somewhere else, and youre trusting it every time. Gulp!
But your browser isnt so discerning. Some of the stuff that comes into it while youre on Facebook might be provided by someone else: another Facebook user; an attacker; a third party application on Facebook. If your browser trusts Facebook, chances are its also going to trust that code. This extends the active content exposure pretty substantially.
User-supplied content:Users put all sorts of content into their own profiles. URLs pointing to cool sites, photos, etc. If they link to something dangerousperhaps inadvertentlyand you click on it Well, you get the drift.
Third party applications:Most of the popular social networking sites have a third-party application interface for companies to generate their own content. Most of it is pretty innocuous and in the spirit of good clean fun, like a little app that lets you throw a virtual snowball at someone else. But, again, it extends that trust boundary in ways you might not want.