Researchers who claim to have discovered the Citrix breach say Iran-linked hackers stole at least 6TB of data, may have first gained access 10 years ago (NBC News)

NBC News:
Researchers who claim to have discovered the Citrix breach say Iran-linked hackers stole at least 6TB of data, may have first gained access 10 years ago  —  The hackers are believed to have penetrated the software giant Citrix years ago and have remained inside the company's computer network ever since.