A bipartisan Senate duo wants to know about any successful hacks of Senate devices and networks.

Democratic Senator Ron Wyden of Oregon, and Arkansas Republican Tom Cotton wrote to Senate Sargent of Arms Michael Stenger calling for an annual report on when Senate computers and smartphones have been compromised, and when hackers have otherwise gained access to sensitive Senate data.

Wyden and Cotton both serve on the Senate Intelligence Committee and are concerned about threats to Senate networks.

“Hackers continue to target all manner of government entities, and there is little doubt that Congress is squarely in their sights,” wrote the senators. “The Sergeant at Arms must be transparent in providing members of the Senate all information about the possible existence and scale of successful hacks against the Senate.”

The pair also urged the sergeant-at-arms notify to Senate leadership, members of the Senate Rules and Administration Committee and the Senate Intelligence panel about any breaches on Senate computers within five days of discovery.