The victim company claims the attack took down its website for several days, causing losses of almost 10 million yuan ($1.6 million).
One of the five arrested, surnamed Wu, told police in Shanghai's Xuhui District that he had been hired by a competing firm to attack the company.
The group allegedly compromised several computers owned by schools and enterprises, then leveraged the compromised machines to launch a DDoS attack that took down the login page for the victim's website, making it inaccessible to customers.https://o1.qnsr.com/log/p.gif?;n=203;c=204650394;s=9477;x=7936;f=201801171506010;u=j;z=TIMESTAMP;a=20392931;e=i
The other four arrested include the owner of the competing company that hired Wu, and three members of Wu's hacker group.
All five are now in detention or awaiting trial.