Law enforcement authorities from the United States and European Union have shut down LeakBase, a prominent cybercriminal marketplace that authorities described as one of the world's largest online forums for illegal activities.

The website operated as a hub for cybercriminals to share stolen passwords, hacked databases, and hacking tools. According to authorities, LeakBase maintained an extensive archive containing hundreds of millions of compromised passwords and personal data from various security breaches.

The coordinated international operation represents a significant blow to the cybercriminal ecosystem, where such platforms serve as central marketplaces for trading stolen credentials and facilitating further cyberattacks. These forums typically enable criminals to monetize data breaches and coordinate malicious activities across borders.

The shutdown follows increased cooperation between US and EU law enforcement agencies in targeting cybercrime infrastructure. Such platforms pose significant risks to individuals and organizations worldwide, as stolen credentials are often used for identity theft, financial fraud, and further cyberattacks.

Authorities have not yet announced whether any arrests were made in connection with the operation or provided details about the investigation's scope and duration.