The web is a playground for cyber attacks, from scareware and Trojan horse text messages to social network data harvesting.
Malicious hackers are a resourceful bunch, and their methods continually evolve to target the ways we use our computers now.
New attack techniques allow bad guys to stay one step ahead of security software and to get the better of even cautious and well-informed PC users.
Don't let that happen to you. Read on for descriptions of 11 of the most recent and most malignant security threats, as well as our complete advice on how to halt them in their tracks.
The URL aliases are handy, but they pose a risk, too. Since short URLs give no hint of the destination, attackers can exploit them to send you to malicious sites.
Use a Twitter client
Programs such as TweetDeck include options in their settings to display previews of shortened URLs.
With such a setting enabled, clicking a shortened URL within a tweet brings up a screen that shows the destination page's title, as well as its full-length URL and a tally of how many other people have clicked that link.
With this information at your disposal, you can make an informed decision about whether to click through and visit the actual site.
Install a URL-preview plug-in
Several web browser plug-ins and services perform a similar preview function.
When you create a shortened address with the TinyURL service, for instance, you can choose an option to create a preview version so that recipients can see where it goes before clicking.
Conversely, if you're considering visiting a TinyURL link, you can enable its preview service to see the complete URL.
For the TinyURL previews to work, though, you must have cookies enabled in your browser.
Rather than changing the shortened links to their full URLs, however, ExpandMyURL checks destination sites in the background and marks the short URLs green if they are safe.
Goo.gl, Google's URL-shortening service, provides security by automatically scanning the destination URL to detect and identify malicious websites, and by warning users when the shortened URL might be a security concern.
Unfortunately, Goo.gl has limited application because it works only through other Google products and services.
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