Cybercriminals are ramping up their efforts to use compromised “Internet of things” devices in botnets that attack other systems, and Congress wants to do something to fix the problem.

Sen. Mark Warner, D-Va., who introduced an Internet of things security bill in mid-2017, is planning to offer new legislation in March, a spokeswoman said. Warner’s office didn’t offer details of the new bill, but she said there will be changes from 2017’s Internet of Things Cybersecurity Improvement Act.