Top 10 Weak Passwords That Make You Vulnerable to Remote Desktop Attacks

In today’s remote work culture, accessing a work computer or server through Microsoft’s Remote Desktop Protocol (RDP) has become a common practice. While RDP makes it easier for employees to connect to their office systems, it also poses a significant risk when security is not properly managed. Cybercriminals often target these connections to infiltrate networks and steal sensitive information. One of the most common vulnerabilities exploited by attackers is weak passwords, leaving users and organizations open to remote desktop attacks. A recent report highlights the most exploited passwords and provides valuable insights into the importance of robust password security.

The Weakest Passwords That Could Lead to Remote Desktop Attacks

According to a report from Specops, a password security provider, over a billion stolen passwords were analyzed in 2024, revealing the top 10 most common passwords that attackers use to exploit RDP connections. This data shows a disturbing trend: many people fail to follow basic security best practices when creating passwords, even for critical systems like RDP.

Organizations monitoring their RDP servers have discovered numerous failed login attempts from cybercriminals, bots, and ransomware groups. When attackers find exposed RDP ports, they use brute force to try multiple username and password combinations. The easier the password, the quicker they can gain access. So, which passwords are the worst offenders? Let’s take a look:

123456 – A simple, predictable choice that remains the most common password used in attacks. This is a prime example of a “keyboard walk” password.
1234 – A slightly shorter but still incredibly weak variation of the previous one.
Password1 – Although this password includes a number, it remains woefully inadequate as a secure choice.
12345 – Another number sequence that provides little protection.
P@sswOrd – A variation of the word “password” with a mix of uppercase letters and a special character. It might meet some password criteria but is still a weak option.

6. password – Simple and easy to guess.

Password123 – A combination of “password” and numbers, still lacking real security.
Welcome1 – Likely used as a default or temporary password, which remains unchanged by many users.
12345678 – A slightly longer number sequence, but still predictable.
Aa123456 – A mix of letters and numbers, but still follows an easily guessable pattern.

These passwords are all relatively easy to crack, making them prime targets for brute force attacks. When hackers gain access to an RDP connection, they have the potential to infiltrate an organization’s entire network, stealing sensitive data and causing immense damage.

How to Secure Your Remote Desktop Connections

To prevent unauthorized access through weak passwords, it’s crucial to adopt strong, complex passwords for RDP connections. But what makes a password secure?

A secure password should:

Contain a mix of lowercase and uppercase letters, numbers, and special characters.
Be at least 12–15 characters long. Short passwords can be cracked much quicker through brute force.
Avoid simple patterns, such as sequential numbers or common phrases.

Despite these recommendations, the majority of passwords exploited in RDP attacks are still short, easy-to-guess strings of characters. In fact, less than 8% of the passwords used in these attacks contained a mix of all four character types (numbers, lowercase, uppercase, and special characters).

Specops’ analysis reveals that passwords with 15 characters or more would have blocked 98% of the RDP attacks studied. The length and complexity of your password are key to defending against brute-force techniques. Attackers are unlikely to succeed in cracking passwords with more than 12 characters, especially if they follow best practices for complexity.

What Undercode Says: Analysis of Weak Password Usage in RDP Attacks

The data surrounding weak passwords in RDP attacks is a stark reminder of how easily security measures can be bypassed by cybercriminals. Many organizations still fail to enforce strong password policies, allowing weak combinations like “123456” or “Password1” to be used across critical systems. This negligence often leads to successful attacks and data breaches.

What stands out in the analysis is the shocking prevalence of simple, easy-to-guess passwords that users continue to rely on. It highlights a deeper issue with password culture—many individuals and companies are not prioritizing security. Some users still adhere to outdated notions, believing that a password with a single capital letter or a special character is enough to fend off an attack. But this is far from sufficient. The inclusion of a special character in “P@sswOrd” does little to enhance its security because the rest of the password remains simple and predictable.

Organizations must adopt stricter security measures, such as:

Strong Password Policies: Employees should be forced to create passwords that are not only complex but also long. Enforcing a minimum of 12–15 characters and a combination of character types is crucial.
Multi-Factor Authentication: Using two-factor authentication (2FA) adds an additional layer of protection, requiring attackers to provide more than just a password to access systems.
Network Monitoring: Regularly monitor RDP connections for unusual activity. If failed login attempts spike, it could indicate a brute-force attack.
Port Configuration and Updates: Misconfigured ports are a common entry point for hackers. Ensuring that TCP port 3389 is secured with SSL and isn’t exposed to the internet is an essential step in reducing vulnerabilities.

The main takeaway here is that even if a password satisfies minimum length and complexity requirements, it is not necessarily secure. Implementing a multi-layered security approach—starting with strong password policies and ending with up-to-date systems and monitoring—provides the best defense against remote desktop attacks.

Fact Checker Results:

The analysis by Specops shows that brute-force password attacks are the leading method for exploiting exposed RDP ports.
While complex passwords can block most attacks, less than 8% of compromised passwords followed the best practices for security.
Password length and complexity are critical factors in preventing successful RDP attacks, with passwords longer than 15 characters thwarting almost all brute-force attempts.

References:

Reported By: https://www.zdnet.com/article/these-weak-passwords-can-leave-you-vulnerable-to-remote-desktop-attacks/
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