Hackers have encrypted systems at Indonesia's national data centre with ransomware, causing disruptions in immigration checks at airports and various public services, according to the country's communications ministry. The ministry reported that the Temporary National Data Centre (PDNS) systems were infected with Brain Cipher, a new variant of the LockBit 3.0 ransomware.

Communications Minister Budi Arie Setiadi informed that the hackers demanded$8 million for decryption but emphasised that the government would not comply. The attack targeted the Surabaya branch of the national data centre, not the Jakarta location.

The breach risks exposing data from state institutions and local governments. The cyberattack, which began last Thursday, disrupted services such as visa and residence permit processing, passport services, and immigration document management, according to Hinsa Siburian, head of the national cyber agency. The ransomware also impacted online enrollment for schools and universities, prompting an extension of the registration period, as local media reported. Overall, at least 210 local services were disrupted.

Although LockBit ransomware was used, it may have been deployed by a different group, as many use the leaked LockBit 3.0 builder, noted SANS Institute instructor Will Thomas. LockBit was a prolific ransomware operation until its extortion site was shut down in February, but it resurfaced three months later. Cybersecurity analyst Dominic Alvieri also pointed out that the Indonesian government hasn't been listed on LockBit's leak site, likely due to typical delays during negotiations. Previously, Indonesia's data centre has been targeted by hackers, and in 2023, ThreatSec claimed to have breached its systems, stealing sensitive data, including criminal records.