Government report and US senator criticise Air Traffic Control network security Author: Graham Cluley Published March 10, 2015 4:30 pm in Guest blog, Security threats, Vulnerability 0 With up to 2,850 flights in the air at anyone time, you can appreciate the importance of air traffic control systems not being tampered with or hijacked by malicious hackers. Read more in my article on the Optimal Security blog. Read more...