A distributor noted for an extensive use of rootkits that make its software difficult to delete has closed shop, citing unspecified practices of its distribution partners as the reason.

ContextPlus, which spread spyware and , including software that hijacked searches and programs that leveled systems with egregious numbers of pop-up ads, has posted a message on its Web site saying it’s out of the business.

Read more: Rootkit-spreading Spyware Shop Shuts Down