A new wave of ‘vishing’ attacks is breaking into SSO accounts in real time

Threat hunters and researchers are racing to contain a wave of voice-phishing attacks targeting single sign-on tools, already leading to data theft and extortion attempts. Multiple cybercrime groups are combining voice calls and advanced phishing kits to trick victims into handing over access — including a group identifying itself as ShinyHunters, which has publicly named alleged targets and posted samples of stolen data.

The attacks share common characteristics with previous campaigns attributed to ShinyHunters, which has abused third-party vendors to gain initial access to multiple company networks, including the attack spree that impacted more than 700 Salesforce customer environments last fall.

“Mandiant is tracking a new, ongoing ShinyHunters-branded campaign using evolved voice phishing techniques to successfully compromise SSO credentials from victim organizations, and enroll threat actor controlled devices into victim multifactor authentication solutions,” Charles Carmakal, chief technology officer at Mandiant Consulting, said in an email to CyberScoop.

Read more at CyberScoop