Clop, a prolific ransomware gang, has taken credit for stealing data from at least 66 companies by exploiting a flaw in widely used corporate file transfer tools made by Cleo Software.
The cybercriminal gang listed on its dark web leak site on Tuesday the partial names of companies it has hacked, which TechCrunch has seen but which did not respond to the gang's outreach. The gang said it planned to soon reveal the full names of the companies it hacked, likely in an attempt to extort victims into paying the hackers a ransom not to release their stolen files.
This is the latest massive hack by the Clop gang in recent years targeting file transfer tools used by companies to share often large and sensitive data sets online. In past years, Clop has taken credit for hacks targeting hundreds of companies that previously relied on similar file transfer tools, including Accellion, GoAnywhere and MOVEit.
