It isn't clear why the hackers tried to access the MTA's computer systems, but investigators believe it could be linked to China's efforts to dominate the rail car market.
The hackers from Cl0p Ransomware allegedly stole data from the law firm Jones Day and posted a number of the illicitly obtained documents on the dark web.
A report sent to UN Security Council members said that North Korean hackers continued to attack financial institutions and cryptocurrency exchanges over last year.
With hackers slowly turning to artificial intelligence, cyberattacks would become sophisticated and difficult to prevent as per the report by the UNICRI and Europol
After the NSA published a list of 25 common vulnerabilities, cybersecurity research firm Check Point found that Chinese hackers have been exploiting them to expand globally