SEOUL, South Korea — North Korea’s state-sponsored hackers are increasingly going after money rather than secrets, according to a report published on Thursday by a South Korean government-backed institute.

Cybersecurity experts have noticed a shift in the hacking attacks they suspected were mounted by North Korea. Formerly, most such attacks appeared intended to cause social disruption or purloin secret data, and the targets were generally the computer networks of government agencies or media companies in countries it considered hostile. The best-known example was a 2014 attack on computers at Sony Pictures Entertainment.

That kind of attack is still occurring, but in the last few years, North Korean hackers seem to have become more interested in stealing cash, the Financial Security Institute said in its report on Thursday.

The report said North Korean-linked hackers were behind the recent digital theft of $81 million from Bangladesh’s central bank. The North Koreans also tried to breach Polish banks, leaving traces that led anti-hacking experts to believe the hacking group also planned to steal money from more than 100 other organizations around the world.