CAPTCHA

Cybercriminals are using Google reCAPTCHA to hide their phishing attacks

Security researchers say that they are seeing cybercriminals deploying Google’s reCAPTCHA anti-bot tool in an effort to avoid early detection of their malicious campaigns.

Read more in my article on the Hot for Security blog.

Chess CAPTCHA – a serious defence against spammers?

Spammers are told they have to solve a chess puzzle before they can leave junk messages.

Share via email “Friends” spam via The Daily Mail leads to 419 scam

Spammers seem not to realise that Rachel, Monica, Phoebe, Chandler, Joey and Ross stopped being Friends years ago.

Civil Rights CAPTCHA asks how you feel about gay people being beaten with sticks

If you want to put a spanner in the works of automated bots leaving spam comments on your blog, or creating fake accounts on your website, one of the things you may deploy is a CAPTCHA system.

Now one group has put a civil rights spin on things.

Facebook CAPTCHA fail

When CAPTCHAs fail..

A complicated calculus-based anti-spam CAPTCHA

Croatian eggheads are having fun with a web form designed to stretch mathematical minds and prevent spam bots.

Would you be able to complete the form?