The FBI and the Justice Department took down two websites linked to the pro-Iranian hacktivist group Handala, which last week hacked medical tech giant Stryker.

One of the seized sites had posted screenshots of Stryker's internal IT systems. However, the hacking group Handala is already preparing to launch a new site.

The FBI recently informed Congress it detected suspicious cyber activity on an unclassified system containing “law enforcement sensitive information.”

Just a day after US authorities seized four domains, an Iranian government-linked hacking group, Handala, has re-established its online presence. The group, which claimed responsibility for a cyberattack on medical giant Stryker,

The Iran-linked hacking group had been quiet since causing significant disruptions to American medical company Stryker.

The U.S. government seized two websites run by an Iran-linked group following a cyberattack on the global medical device supplier and issued a warning about end point management risks. Meanwhile, shipping of some patient implant devices has been delayed.

Industry groups are seeing a “steady state” of Iran-linked hacking activity but observers should still keep their eyes peeled, CISA’s Nick Andersen said.