When hackers breach a database, the first thing they look for is the easiest prize: plaintext passwords. You'd think in 2025, after countless high-profile breaches and regulatory requirements, that storing passwords in readable text would be ancient history. Yet our database of over 22 billion compromised records tells a sobering story—plaintext passwords appear in 17,982 breaches, accounting for the most common data type exposed across all incidents.
The Plaintext Problem That Won't Go Away
Consider the scale of this negligence. The XSS.IS Combolist breach alone exposed 2.47 billion records—each containing email addresses, usernames, and plaintext passwords. The Misc Combolists collection added another 1.92 billion plaintext credentials. The Ga$$Pacc Collection? 518 million more plaintext passwords freely available to anyone who downloads the leaked data.
These aren't edge cases. They're massive collections representing real people whose passwords were stored without even basic hashing—let alone modern encryption standards like bcrypt, scrypt, or Argon2.
When your password is stored in plaintext, here's what happens:
- Database administrators can read it
- Anyone who breaches the system can read it immediately
- You have zero protection even if the breach is detected quickly
- Attackers can use it instantly across your other accounts
Why Companies Still Get This Wrong
The technical excuse doesn't hold water. Password hashing libraries exist in every programming language, are well-documented, and in many cases are easier to implement than custom authentication systems. So why does plaintext storage persist?
The real reasons are organizational, not technical:
- Legacy systems that haven't been updated since the early internet era
- Developer inexperience where security isn't prioritized during rapid development
- Cost-cutting measures that defer security investments until after a breach
- Compliance gaps in industries without strict data protection regulations
Some companies store passwords in plaintext because they need to send password reminder emails—a practice that should have died with dial-up internet. Others simply don't know better, building authentication from scratch rather than using established security frameworks.
The Cascade Effect You Need to Understand
Of the 1,822 breaches in our database confirmed to contain plaintext passwords, many are combolists—aggregated collections compiled from multiple sources. This creates a multiplication effect. Your password from one carelessly secured website doesn't just compromise that account. It becomes ammunition for credential stuffing attacks across every service you use.
Here's the attack pattern:
- Your password leaks from a small forum or service that stored it in plaintext
- It enters a combolist traded on dark web forums
- Automated tools test that email-password combination on banking, email, and social media platforms
- If you reused the password anywhere, those accounts fall like dominoes
The data proves this pattern. Look at Collection #1, which contained 649 million records, or the AntiPublic collection with 348 million records. These aggregated datasets exist specifically because plaintext password leaks provide immediately usable credentials.
What Changed in the Last Five Years
Our most recently dated breaches show an interesting evolution. The latest incidents are predominantly stealer logs—malware that extracts saved passwords directly from browsers and applications. These 16,055 stealer log breaches represent a shift in attacker strategy.
When companies finally implement proper password hashing, attackers adapt by stealing credentials in transit or from client-side storage. The underlying problem remains: once your password exists in plaintext anywhere in the system lifecycle, it's vulnerable.
Protecting Yourself in a Plaintext World
You can't control whether a website stores your password properly. You can only control your response to that reality.
Your defensive strategy should include:
- Use unique passwords for every account — password managers make this practical rather than theoretical advice
- Enable two-factor authentication everywhere possible — it protects you even when passwords leak
- Assume any password you create will eventually be compromised — because statistically, it probably will be
- Monitor your exposure actively rather than waiting for breach notifications that may never come
The 22,656,206,931 records in our database represent real accounts, real people, and real consequences. Your email address likely appears somewhere in that number, possibly multiple times.
The Bottom Line
Plaintext password storage is a solved problem from a technical standpoint. The fact that it remains the most common data type in our breach database—appearing in 17,982 incidents—represents an implementation failure, not a technological limitation.
Companies that store passwords in plaintext are either uninformed about basic security practices or have made a conscious decision that your security isn't worth the minimal development effort required to implement proper hashing. Either scenario should concern you as a user.
Don't wait for better corporate behavior. Check your exposure now at LeakedSource to see which of your accounts have appeared in breaches—and which of those breaches included plaintext passwords. Knowledge of your exposure is the first step toward protecting yourself in an ecosystem where 1,822 major breaches prove that plaintext password storage is still disturbingly common.
Your credentials are out there. The question isn't if, but where—and what you're going to do about it.