Levi Strauss & Co. disclosed a cyberattack in an SEC filing, saying hackers used social engineering to compromise three company-issued computers and steal corporate data, BleepingComputer reports. The company said it contained the breach quickly and that no customer data was affected, and it has not experienced any business disruptions.

The investigation is ongoing. Levi's said it does not expect the incident to have a material impact on its business or financial position. BleepingComputer could not find threat actors publicly claiming the attack, though some media outlets have linked it to UNC6671, a group associated with recent voice phishing campaigns.