The Incomplete Manga-Guide Leaked 3,385 MD5 Password Hashes

HEROIC analysts identified a data breach tied to The Incomplete Manga-Guide, a German-language database and directory for manga officially published in Germany. The breach surfaced on a hacking forum on August 21, 2018, and includes 3,385 records made up of email addresses and MD5 password hashes. While the affected user count is modest compared to major breaches, the exposed hashes remain crackable years later.

Why This Is Dangerous

MD5 is an outdated hashing method that is no longer considered secure. Attackers can run these hashes through cracking tools and rainbow tables to reveal the original passwords behind them, particularly for anyone who chose a common or simple password. Once cracked, the password works just like a plaintext leak would.

What Was Exposed

• Email addresses
• MD5 password hashes

Why This Matters

Once an MD5 hash is cracked, the recovered email and password pair can be used exactly like a stolen plaintext credential. Attackers use these combinations for credential stuffing across other websites, which can lead to account takeover, identity theft, or financial fraud for anyone who reused their Manga-Guide password elsewhere.

How Database and Combolist Breaches Expose Old Password Hashes

This incident is classified as a database and combolist breach, meaning the attacker pulled a full copy of stored user records directly from the site's database rather than harvesting them individually. Once that database dump reached a hacking forum, the MD5 hashes inside it became a target for anyone with cracking software, since MD5 has long been known to be weak against modern computing power.

Check If You Are Affected

If you ever registered on The Incomplete Manga-Guide, it is worth checking whether your email is part of this leak. HEROIC's free breach scanner searches a database of more than 400 billion leaked records, giving you a fast way to confirm your exposure and update any old passwords still in use.