2FA: Our file to know everything about two-factor authentication

According to a BVA survey, 70% of French people think that the digitalization of the world is detrimental to their privacy. This concern is illustrated by the multiplication of methods of protecting personal data. Two-step authentication 2FA is one of many protocols currently in use. Much more secure than the password, it protects against cyberattacks and indiscretions of all kinds. Find out more through these few paragraphs.

Dual-factor authentication or 2FA

Like Facebook, many applications require a telephone number or email address to validate the creation of an account. This is the case for Gmail, Skype and many other platforms. If the person connects to an unusual device, the program invites them to authenticate. A code will then be sent to their cell phone or email box. This approach allows you to verify that it is indeed the account holder.

Double-factor authentication or 2FA is also the recourse if the person ever has the wrong password or has simply forgotten it. Sending the SMS to your cell phone resolves the inconvenience instantly. Some applications wait for this message to open automatically. Others suggest changing the keyword. In any case, it is a way of blocking any intrusion attempt from a hacker’s PC.

Multiple ways to authenticate a user

2FA or “Two-Factor Authentication” in English uses a second means to validate the connection to an account. The programs mainly use SMS to send the key, but this is not the only method used. Some use email. There are various codes. Most of them have a validity limited to a short period.

Some applications use the time-based one-time password or TOTP. This is a temporary password. The rolling code or pairing with the Smartphone. Publishers such as Microsoft or Google offer their own “authenticators”. There are also third-party 2FA solutions like Twilio Authy and Duo Mobile. In some situations, fingerprint or voice authentication is required. Even more complex, cryptographic keys and facial recognition are two methods that are gaining ground.

Better protection of private data

Two-factor authentication improves the security of private data. It protects accounts and devices from hacker intrusions. Difficult to circumvent, 2FA technologies are enough to block a large majority of hackers in their efforts. Sensitive information will also be protected from prying eyes, in this case those of a jealous spouse.

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For ultra-confidential files and delicate accounts, it is better to use two separate 2FA authentications. This takes the level of security to a whole new level. Indeed, malware running rampant on Android phones already allows hackers to read codes sent by SMS to their target. Nicknamed Rampant Kitten, this spy program demonstrates the need for a second or third 2FA.

Simple, multi-support and free approach

Two-factor authentication programs are mostly easy to use. It relies on a cell phone or email address. Reception is free and instantaneous. Only a few processes require an Internet connection. In all cases, the process remains intuitive with two steps to follow at most so as not to discourage users unfamiliar with the technology.

the concept of 2fa

The majority of 2FA authentications are multi-media. Some of these programs run on a computer, cell phone, or other device. Regardless of the equipment used, the protection of private data remains at the same level. Then, the user maintains total control over their account. For example, he can change his password as regularly as he wishes, in order to further strengthen digital security.

Application in a multitude of fields

The effectiveness of two-step authentication is demonstrated by many uses. This method offers an additional guarantee of security for Microsoft and Google applications. Social networks are also legion to use this approach. Then, there are platforms where validation by email is required to connect to the personal space.

Banking services commonly use 2FA technologies. They allow them to ensure that sensitive information, but especially customer money, is well protected. Dual-factor authentication significantly reduces the risk of identity theft and credit card abuse. With this in mind, online sales players sometimes ask consumers to confirm their order with a code sent directly to their cell phone.

Bonus: tips for choosing a 2FA authentication system

lastpass vs 1password

Although it is not yet universally adopted, two-factor authentication is on the verge of establishing itself as a security standard. In addition to confirmation by SMS, the short-validity code such as that of Digiposte allows you to have peace of mind. All the better if it is possible to download Google Authenticator. This application is compatible with Android devices, but also with iOS.

Lastpass is a password manager you should know. It offers to lock all accounts on social networks and all platforms with login. This is the kind of essential tool if you lose your smartphone or if children play with the device. Much less popular than the others, Aegis is an open source program offering a single-use code per phone.