Passwords.txt | 2021

If you found a file named passwords.txt on your computer containing a list of common words or profanity, it is likely part of a legitimate security feature used by Google Chrome or macOS . Why is this file on your system?

This specific file is a component of the zxcvbn password strength estimator .

Purpose: Chrome uses this list to recognize common, weak, or easily guessable words—including slang and dictionary terms—to warn you if you're trying to use a "bad" password .

Location: It is typically found within application data folders related to Chrome or system frameworks on macOS .

Persistence: If you delete the file, the system or browser will likely recreate it automatically to ensure the security estimator continues to work . Common "Good Content" for Security Testing

In the context of cybersecurity and ethical hacking, "good content" for a passwords.txt file refers to high-quality wordlists used to test the resilience of systems . Notable examples include:

RockYou.txt: One of the most famous wordlists, containing over 32 million passwords leaked from a 2009 breach. It is considered the gold standard for testing brute-force protection .

SecLists: A popular collection of multiple passwords.txt variants, such as 10k-most-common.txt or lists of default credentials .

CTF Wordlists: Smaller, curated lists like the Mintlify password wordlist contain roughly 1,500 entries covering human-readable words and systematic patterns for "Capture The Flag" challenges . What Makes a "Good" (Strong) Password?

If you are looking for what a strong password should look like (as opposed to a list of weak ones), official guidelines from CISA and Microsoft recommend: default-passwords.txt - danielmiessler/SecLists - GitHub

Storing your credentials in a file named passwords.txt is one of the most common—and dangerous—security lapses. It serves as a literal "treasure map" for both automated malware and human attackers. The Problem with "passwords.txt"

Maintaining a plain-text file for passwords creates a single point of failure that is extremely easy for attackers to find. Malware Target:

Modern "infostealers" are programmed to scan common directories (like Desktop and Documents) for files with names like passwords.txt secret.docx passwords.txt

. These files are then exfiltrated to an attacker's server in seconds. No Encryption: Unlike dedicated password managers, a

file provides zero encryption. Anyone with physical or remote access to your device can read every credential you own without needing a master key. CTF Archetype:

In cybersecurity competitions (Capture The Flag or CTF), finding a passwords.txt

file is a classic "easy win" scenario used to teach beginners how simple it is to compromise a system through poor local file security. Why People Do It

Despite the risks, people often use this method because it feels immediate and requires no new software. Convenience:

It is faster than setting up a manager and works across any device that can read text files. Memory Fatigue:

With dozens of accounts requiring complex, unique characters, users often resort to writing them down just to keep track. TechTarget Better Alternatives

If you find yourself relying on a text file, consider these more secure upgrades: Password Managers: Tools like Proton Pass

encrypt your entire database, requiring a single master password to unlock everything. Physical Storage: Some security experts, including Bruce Schneier

, suggest that writing passwords in a physical notebook kept in a locked drawer is actually safer than an unencrypted file on your desktop, as it requires a "physical" break-in rather than a remote digital one. Simple Encoding:

use a text file temporarily, never write the actual password. Use a "hint" or a simple personal cipher—like adding two extra characters at the end—that only you know to remove. or a guide on how to set up two-factor authentication

The Dangers of passwords.txt: Why You Should Never Store Passwords in Plain Text If you found a file named passwords

In the digital age, password management is a critical aspect of online security. With the rise of data breaches and cyber attacks, it's essential to handle passwords with care. One common mistake that can have severe consequences is storing passwords in a plain text file, often named passwords.txt. In this article, we'll explore the risks associated with storing passwords in plain text and why it's a practice you should avoid at all costs.

What is passwords.txt?

passwords.txt is a simple text file that contains a list of usernames and passwords, often in plain text. This file might be created by a developer, administrator, or even a casual user who wants to keep track of their login credentials. The file might look something like this:

john: mysecretpassword
jane: herpassword123
admin: password123

The Risks of Storing Passwords in Plain Text

Storing passwords in plain text, as in the example above, is a significant security risk. Here are some reasons why:

  1. Unauthorized Access: If an attacker gains access to your system or device, they can easily read the passwords.txt file and obtain all the login credentials.
  2. Data Breaches: If your device or system is compromised, the passwords.txt file can be stolen, along with other sensitive data.
  3. Password Reuse: Many users reuse passwords across multiple accounts. If an attacker obtains a password from the passwords.txt file, they may be able to use it to access other accounts.
  4. Compliance Issues: Storing passwords in plain text can violate regulatory requirements, such as GDPR, HIPAA, or PCI-DSS, which mandate secure password storage.

Consequences of a passwords.txt Leak

The consequences of a passwords.txt leak can be severe:

  1. Account Takeovers: Attackers can use the stolen passwords to take over accounts, leading to financial loss, identity theft, or reputational damage.
  2. System Compromise: If an attacker gains access to a system or device with a passwords.txt file, they can use the passwords to gain further access to sensitive data or systems.
  3. Reputation Damage: A data breach involving a passwords.txt file can damage an organization's reputation and lead to loss of customer trust.

Secure Alternatives to passwords.txt

So, what's a better way to manage passwords? Here are some secure alternatives:

  1. Password Managers: Use a reputable password manager, such as LastPass, 1Password, or Dashlane, to securely store and generate unique, complex passwords.
  2. Encrypted Files: Store passwords in encrypted files, such as those created with tools like Veracrypt or BitLocker.
  3. Secure Password Storage Solutions: Implement a secure password storage solution, such as Hashicorp's Vault or AWS Secrets Manager.

Best Practices for Password Management

To keep your passwords secure, follow these best practices:

  1. Use Unique, Complex Passwords: Generate unique, complex passwords for each account.
  2. Use a Password Manager: Store passwords in a reputable password manager.
  3. Avoid Plain Text Storage: Never store passwords in plain text, including in files like passwords.txt.
  4. Regularly Update Passwords: Regularly update passwords to minimize the impact of a potential breach.

In conclusion, storing passwords in a passwords.txt file is a security risk that can have severe consequences. By understanding the risks and using secure alternatives, you can protect your online identity and prevent data breaches. Remember to follow best practices for password management to keep your digital life secure. The Risks of Storing Passwords in Plain Text

1. Directory Busting / Forced Browsing

Every web scanner (Gobuster, Dirb, DirBuster) has a wordlist containing hundreds of variations of passwords.txt. When a hacker runs a scan against your domain (https://yourcompany.com), the first 100 requests include:

Why Do Smart People Still Use passwords.txt?

If it is so dangerous, why does it persist? The answer is cognitive friction.

Modern security requirements are exhausting.

In a desperate moment, an employee thinks: “I’ll just save it here for five minutes so I can copy-paste it to Dave.”

Those five minutes turn into five months. That temporary passwords.txt becomes the permanent key to the castle.

7.4 Impact

2.2 Example Discovery Output

/home/john/passwords.txt
/var/backups/passwords.txt.bak

Step 3: File Auditing & Alerts

Set a File Server Resource Manager (FSRM) quota template on Windows Server to generate an alert whenever a user saves a .txt file containing the string "login" to a network share.

Best Practices for Storing Passwords

  1. Hashing and Salting: Instead of storing passwords in plain text, passwords should be hashed and a unique salt should be used for each password. Hashing is a one-way process, meaning it's easy to generate the hash from the password but virtually impossible to retrieve the original password from the hash. Salting adds an extra layer of security to prevent attacks using precomputed tables (rainbow table attacks).

  2. Use Secure Password Managers: For personal use, consider using a reputable password manager. These tools generate and store complex, unique passwords for each of your accounts, encrypting them in a vault that can only be accessed with a single master password.

  3. Encryption: For organizational or large-scale storage, consider encrypting the file or database containing passwords. This adds a layer of protection, but it should be used in conjunction with secure practices for managing encryption keys.

4. Why Password Managers Aren’t Always the Immediate Solution

The common rebuttal is: "Just use a password manager." While correct in principle, this ignores the workflow friction that creates passwords.txt in the first place.

The Corporate Problem: Many enterprises ban cloud-based password managers (LastPass, 1Password) due to compliance fears, but they fail to provide a sanctioned alternative. The user is left with Excel (which saves unencrypted .xlsx files) or Notepad.

The Legacy System Issue: Applications from the 1990s often require service accounts with passwords that cannot be reset easily. Engineers keep these in passwords.txt because they cannot store them in modern vaults.