A padlock and chain on a computer keyboard.

IBM X-Force Research recently observed a wave of malware-induced Active Directory (AD) lockouts across several incident response engagements. The lockouts caused hundreds to thousands of AD users to get locked out of their company’s domain in rapid succession, leaving employees of the impacted organizations unable to access their endpoints, company servers and networked assets.

https://securityintelligence.com/qakbot-banking-trojan-causes-massive-active-directory-lockouts/