How to ensure password safety?

Passwords are the key to our digital identities. A strong password is the first line of defense against cybercriminals. Yet, Statistics show that many users use unreliable passwords Or neglect safety flaws in their digital habits.

The conditions to ensure the safety of passwords

For their passwords, many people still bet on weak or easy -to -guess combinations. To guarantee a high level of password safety, different factors should be taken into account. THE Choice of a safe password as well as theuse of a password manager must be considered as basic conditions.

The characteristics of a safe password

Although a password alone does not offer absolute security against cybercriminals' attacks, the creation of a safe password is nevertheless very important to protect its own accounts. Users can check if the chosen password is reliable Using different criteria:

• Length : The length of a password plays a decisive role, because the longer passwords are more difficult to crack (and this, exponentially) than the shortest. A good password must have at least 12 to 16 characters.
• Complexity : a safe password must contain capital and lower case letters, figures and special characters such as @, # or %. This diversity makes it more difficult to guess a password, both for a human and for a machine.
• Unpredictability : Simple models or recognizable words must be avoided, because cybercriminals often use dictionary attacks in which they try current passwords.
• Uniqueness : Do not use the same password for different services and platforms, but rather bet on individual passwords for different web services.
• Regular updates : It is particularly useful to regularly update passwords for critical services. You thus minimize the risk that one of them will be used to unquestioned due to previous security flaws.

Choice of an appropriate password manager

Password managers are practical tools to create complex passwords and store them safely. When choosing the solution, you should ensure that the end -to -end encryption is supported and that functions such as alerts in the event of compromised passwords or safety checks are integrated. Regular updates are also proof that the tool is trustworthy.

Significant password leaks in recent years

Every day we entrust a large volume of sensitive data to companies and technique, passwords Being in most cases the only measure protecting them. This precaution is however often neglected: the many Data leaks From the recent web history show it. Cybercriminals have regularly managed to obtain connection information and seize confidential user data using attack methods such as malware, phishing websites or emails, or brute force attacks. Here is an overview of some of the most serious incidents that have taken place in recent years:

• Linkedin (2012, 2016) : Linkedin was hacked in 2012 and more than 6.5 million chopped passwords were stolen. In 2016, 117 million additional connection data from this hacking appeared on the Darknet.
• Yahoo (2013, 2014) : One of the greatest security violations ever committed Yahoo. Between 2013 and 2014, a total of three billion accounts were compromised. This data violation included user names, passwords and security issues.
• Adobe (2013) : More than 150 million Adobe user accounts were stolen during an attack, notably due to poor encryption of passwords.
• Facebook (2019) : Facebook has announced that millions of user passwords were stored in clear text on internal servers. Although the data has not been made public, this incident highlights the need for secure practices on the business side.
• Collection#1-#5 (2019) : As part of this mega-presidated, more than two billion email addresses with their password was published in January 2019. The data came from various leaks, some already known, others not.
• Twitter (2022) : a security incident has led to the compromise of personal data of more than 5.4 million accounts, including telephone numbers and email addresses. The origin was a bug.
• Rockyou (2024) : Rockyou2024 was a massive compromise, considered one of the largest collections of passwords ever published, made up of more than 9.9 billion passwords collected from different sources.

In this context, cybersecurity is essential. However, user practices remain worrying: a Google study of 2019 showed that 77 % of French people used the same password on several sites, and that 37 % of them estimated that their passwords were not secure.

Checking passwords safety is a crucial step to protect your digital accounts from unauthorized access or after data leaks. There are several methods and tools that allow you to check if your passwords have been compromised, if they meet current safety standards or if they are too low.

Online services to check data leaks

• Have i been pwned (hibp) : one of the best known and most reliable platforms is Have i been pwned. You can check if your email or password has been compromised in a known data leak. After entering your email, you will get a list of websites where your data may have been stolen. The site also makes it possible to directly check a password, the entry is anonymous thanks to special hash technologies.
• Google security control : In Chrome, Google offers an integrated password verification function. The browser warns you if one of them is part of a data violation. You can also carry out a complete security check via your Google account, which also identifies the low or used passwords twice.
• Password security functions : Many managers offer a recorded password verification function. These tools analyze your passwords to detect known weakness, double uses and security incidents. You get a simple preview of passwords that it is recommended to update.

Test the strength of passwords

In addition to the search for data leaks, it is important to assess the strength of your passwords. There are many tools that can help you. These services test the length, complexity and entropy (random character) of a password. They also simulate the time it would take to break your password using a brute force attack. For example, the password « 123456 » can be cracked in less than a second, while a password like « X $ 4G8JWQ! A_%J » could resist for years.

Manual verification and monitoring

If you know that a particular platform has been affected by a data violation, check if you have an account. If you have used the same password on different sites, change them immediately. It is also useful to follow cybersecurity news or platforms such as Reddit (for example on the Subreddit R/NetSec) in order to keep up to date with new data leaks. Often, security flaws are reported earlier than by official channels and you can take time in time. Tools like HIBP also offer email notifications that inform you when your email address appears in a new compromise.