Cjlifo

We've been tracking a resurgence of older breaches appearing in combolists and credential stuffing attacks. What really struck us about this particular incident wasn't the size of the breach itself, but the age of the data and the continued viability of MD5-hashed passwords in some cracking efforts. The fact that credentials from a 2018 breach are still circulating and potentially effective highlights the long tail of risk associated with poor security practices. Our team initially flagged this during a routine sweep of combolists offered on a popular hacking forum.

Cjlifo: The Korean Platform Breach Resurfaces After Six Years

In February 2018, the Korean platform Cjlifo experienced a data breach that impacted 27,828 accounts. The breach, now over six years old, has resurfaced in combolists used for credential stuffing attacks. This re-emergence underscores the enduring risk posed by older, unmitigated breaches and the continued reliance on weak hashing algorithms.

The breach was initially reported in February 2018, with details quickly spreading across various security communities. The re-emergence caught our attention due to the age of the data and the fact that it's still being actively traded and used. While the number of records is relatively small compared to mega-breaches, the persistence of this data highlights a systemic problem.

This breach matters to enterprises now because it illustrates the long-term consequences of inadequate security measures. Organizations need to proactively monitor for leaked credentials associated with their domains and implement robust password policies, including multi-factor authentication, to mitigate the risk of credential stuffing attacks. The use of MD5 hashing, a deprecated algorithm, further exacerbates the risk, making password cracking significantly easier.

Key point: Total records exposed: 27,828

Key point: Types of data included: Email Addresses, Password Hashes (MD5)

Key point: Source structure: Likely a database export

Key point: Leak location(s): Hacking forums, combolists

Key point: Date of first appearance: February 2, 2018

External Context & Supporting Evidence

While specific news coverage of the initial Cjlifo breach is scarce, the incident aligns with a broader trend of older breaches being weaponized in modern attacks. Security researchers have repeatedly warned about the dangers of weak password hashing algorithms like MD5. As noted in numerous password cracking guides and forum discussions, MD5 is easily crackable using rainbow tables and brute-force techniques, especially when combined with common passwords.

We observed mentions of the Cjlifo breach in several hacking forums and Telegram channels dedicated to sharing and trading combolists. One post claimed the list was "freshly updated" in late 2023, suggesting ongoing efforts to refresh and redistribute the leaked credentials. This reinforces the need for proactive credential monitoring and password reset policies.

Email · Address · Password · Hash