Chinese hackers infiltrated U.S. defense contractors on 20 separate occasions and were only twice noticed by authorities, according to the findings of a year-long Senate investigation released on Wednesday.
The Senate probe revealed that hackers targeted private airlines, technology companies and firms that have been contracted by the U.S. Defense Department to transport troops and defense equipment.
“These peacetime intrusions into the networks of key defense contractors are more evidence of China’s aggressive actions in cyberspace,” said Sen. Carl Levin in a public statement accompanying the report. “Our findings are a warning that we must do much more to protect strategically significant systems from attack and to share information about intrusions when they do occur.”
Read the Senate panel’s full report here.
More Must-Reads from TIME
- Why Trump’s Message Worked on Latino Men
- What Trump’s Win Could Mean for Housing
- The 100 Must-Read Books of 2024
- Sleep Doctors Share the 1 Tip That’s Changed Their Lives
- Column: Let’s Bring Back Romance
- What It’s Like to Have Long COVID As a Kid
- FX’s Say Nothing Is the Must-Watch Political Thriller of 2024
- Merle Bombardieri Is Helping People Make the Baby Decision
Contact us at letters@time.com