Over the past few weeks, subversive elements in the international arena have decided that attacking websites is a fun thing to do! The online world has become the new battle ground between nations vying to de-stabilise rivals. This may seem all very Jack Bauer, but we are increasingly seening ‘SQL injection attacks’ eminating from countries such as Russia, China and North Korea. Of course, that doesn’t mean our countries aren’t doing the same in return, but we only see the results from foreign-based attacks. Read more – ‘What is a SQL Injection Attack’.
A CAPTCHA (an acronym for "completely automated public Turing test to tell computers and humans apart", trademarked by Carnegie Mellon University) is a type of challenge-response test used in computing to determine whether or not the user is human. The term was coined in 2000 by Luis von Ahn, Manuel Blum, and Nicholas J. Hopper of Carnegie Mellon University, and John Langford of IBM. A common type of captcha requires that the user type the letters of a distorted image, sometimes with the addition of an obscured sequence of letters or digits that appears on the screen. Because the test is administered by a computer, in contrast to the standard Turing test that is administered by a human, a captcha is sometimes described as a reverse Turing test. This term, however, is misleading because it could also mean a Turing test in which the participants are both attempting to prove they are the computer. Read more – ‘CAPTCHA’.