Hello. At e-commerce company Coupang, the perpetrator of a massive data breach apparently had improper access to virtually every South Korean adult’s personal information: names, phone numbers and even the keycode to enter residential buildings.

The suspected leaker is a former Coupang employee believed to be a Chinese national who has moved back to China and is on the lam, South Korean officials say.

Now the company faces lawsuits, a government investigation and calls to toughen penalties against such data leaks. Read the full WSJ story. 

More news below.

Ferry boat targeted in cyberattack. European investigators are looking into whether Russia-backed hackers disabled a ferry owned by container-shipper MSC-Mediterranean Shipping Co. The ferry was stuck in a French port on Saturday after stopping the attack and awaiting an extra inspection by French authorities. (Bloomberg)

Fortinet, a maker of firewalls and other security devices, issued patches for two new vulnerabilities in several products. The company urges companies to apply them as hackers are going after devices that remain unpatched. (SecurityWeek)

Electric utility hacked: Customer installation, bill payment and broadband troubleshooting services are down at Pulaski, Tenn.-based Pulaski Electric System after a cyberattack Dec. 4. So far, no customer data appears to have been compromised, the company said. Pulaski said it is working with federal officials, including from the Cybersecurity and Infrastructure Security Agency, to investigate the attack. 

• Further reading from WSJ Pro: Suspected Russian Hackers Step Up Attacks on U.S. Energy Firms

The WSJ Pro Cybersecurity team is Deputy Bureau Chief Kim S. Nash and reporters Angus Loten and James Rundle. Follow us on X @WSJCyber. Reach the team by replying to any newsletter you receive or by emailing Kim at kim.nash@wsj.com.