Tag Archives: CAPTCHA

4 Ways to Protect Email Addresses on Websites, That Don’t Really Work

The Techbusy.org blog offers us 4 tips for hiding email addresses from spammers and hackers when displaying the address on a web page. The reason behind it is simple – spammers use spiders (much the same as search engines do) …

4 Ways to Protect Email Addresses on Websites, That Don’t Really Work
   

Bredolab Pushing New Spam Engine

Experts say the Bredolab botnet is now linked to a spam engine called Webwail that has led to a huge spike in its activity. The spam it’s pumping out is nothing new-fake notifications from UPS claiming a package could not …

Bredolab Pushing New Spam Engine
   

Researchers Find Flaws in Google’s reCAPTCHA

A new report by security researchers claims that Google’s reCAPTCHA system is flawed – so flawed that it would allow a botnet with just 10,000 zombies to manage 10 recognition successes an hour resulting in over 850,000 fake accounts being …

Researchers Find Flaws in Google’s reCAPTCHA
   

New Image Based Captcha Being Tested

Researchers at Google have begun testing a new image based captcha they say can help sites fight back against spammers and fraudsters. The new captchas present the user with an upside down image. All they have to do is flip …

New Image Based Captcha Being Tested
   

Reducing Spam for Publicly Disclosed Email Accounts

Sometimes it seems as though a lot of effort is put into hiding email addresses, keeping them private, and screening them heavily for any trace of spam or unwanted email.  Of course at the end of the day email is …

Reducing Spam for Publicly Disclosed Email Accounts
   

Are CAPTCHAs Doomed?

In a recent post at TheEmailAdmin, I grumbled briefly about how annoying CAPTCHAs can sometimes be. Scratch that. It’s not a case of “sometimes” – I find them to be annoying all the time! The problem I have is that I usually …

Are CAPTCHAs Doomed?
   

3D CAPTCHA Technology Unveiled

Captcha was once cutting edge technlogy in the fight against spam, but not anymore. These days the systems are being cracked regularly, with Google, Microsoft, and Hotmail among the victims. Now, a 3D-based Captcha system claims to be both unbreakable …

3D CAPTCHA Technology Unveiled
   

Microsoft’s CAPTCHA Cracked Again

Hackers have again managed to crack Microsoft’s CAPTCHA system, allowing them to set up thousands of accounts on the Windows Live Hotmail service and spam from them. This latest attack differs from previous ones in that the hackers no longer …

Microsoft’s CAPTCHA Cracked Again