Comparing DarkSide with an independent ransomware operator

Interview With a Russian Cybercriminal — Kelly Sheridan, Dark Reading, 2/2/2021
Interview with a LockBit ransomware operator (pdf)— Azim Khodjibaev,Dmytro Korzhevin and Kendall McKay, Talos Intelligence, 1/4/2021
A Closer Look at the DarkSide Ransomware Gang — Brian Krebs, Krebs On Security, 5/11/2021