September 26, 2020

Captcha: why it is increasingly difficult to prove that you are human – La Provincia


The crescentcommercial use on the internetIt has also led to the development of fraudulent network activities that seek to obtain our data to take advantage of them. In response, the different platforms, both those that sell goods or services and those that handle confidential data,they have incorporated new and more rigorous security measures.

Strengthening guarantees is always good news for users, but sometimes some of these methods can not only delay our online operations, but even becomea real nuisance.

One of the filters that we usually find when buying on the internet are the ‘captcha‘, those distorted texts with which many forms are validated. With them, the user demonstrateswho is a person and not a robot, usually an automated software that seeks to access an account with a password, publish spam or spread viruses. The ‘captcha’ are common to make purchases online, post comments or register on websites.

Before it was enough to click on an option of the type ‘I am not a robot’, but later this method has been sophisticated. Thus, it is usual for forms to requesttype a sequence of distorted letters or numbers. But, in one more step, many platforms require more complex tests. An example are those who ask to click among several examples the photographs that contain a specific object: a car, a tree, a traffic sign €

What does ‘captcha’ mean?

The word ‘captcha’ comes from the acronym of ‘Public and Automatic Turing Test to distinguish Computers from Humans‘(‘ Completely Automated Public Turing test to tell Computers and Humans Apart ‘).

The ‘captcha’ also have audio versions for the visually impaired.

Turing’s name comes fromAlan Turing, the British mathematician and scientist who worked to decipher theEnigma code, the key method of Nazi communications in World War II. He was the one who created a test to determine the ability of a computer to act digitally like a human.

The fundamental purpose of the ‘captcha’ method is precisely to detect the user’s human condition, discarding robots or softwares programmed for unwanted purposes or, directly,fraudulent.

However, these tests have gone from being a mere procedure for users to sometimes becomean obstacle that does not always overcome the first.

But the increasing complexity of these filters has an explanation. Hackers have been sophisticated their methods, withartificial intelligence as a great ally, so they have programmed ‘bots’ capable of overcoming some of these ‘captchas’.

‘reCaptcha’ and ‘reCaptcha v3’

With this risk in mind, companies and institutions have given these tests greater complexity. Thus appeared the ‘reCaptcha‘, developed byGoogle, and that initially showed scanned words of texts. Subsequently, the internet giant incorporated new methods, such asalgorithms that distinguished user behavioron the internet to distinguish humans from machines.

In this permanent struggle between hackers and internet service providers, the tests continue to evolve and sometimes complicate, although the idea and challenge of legal operators on the Internet remains to create filtros safe and at the same time, simple.

In this regard, the ‘reCaptcha v3‘, also powered by Google, cake to avoid these interactive tests to validate users as humans through data to which they have access, including, for example, those of mouse movements.

.



Source link