S. Korea's intel agency warns of software supply chain attacks by N. Korean hackers

South Korea's intelligence agency has warned of hacking attacks from North Korea, saying increasingly sophisticated techniques are being used to steal classified information and key technologies from government agencies and tech companies.

The National Intelligence Service said Tuesday that North Korean hacking groups have been focusing on "software supply chain attacks," using methods such as hacking IT service providers to bypass security, exploiting software vulnerabilities, and targeting security system weaknesses.

The agency is now urging companies and institutions to apply software security patches and block internet access for administrator accounts.

It also says it's important to create a checklist of basic security protocols and enhance employee security awareness through training.