National Cyber Emergency Response Team has issued an urgent advisory warning of a growing wave of ransomware incidents in Pakistan linked to the “BlueLocker” malware. The advisory highlights a significant increase in attacks where hackers use malicious software to extort digital ransom, disrupting operations and risking the permanent loss of critical data.
According to the advisory, cybercriminals behind BlueLocker are targeting organizations through unverified platforms and virus-infected files, often delivered via trojanized downloads, phishing emails, unsecured file-sharing services, and compromised websites. Once infiltrated, the malware is capable of disabling antivirus systems, spreading rapidly across networks, and stealing sensitive information. National CERT has classified the threat as “extremely high” in severity, with primary targets including Windows-based desktops, laptops, servers, networks, and cloud storage systems.
The advisory stresses that a BlueLocker infection can result in severe operational setbacks for institutions. Business activities may be suspended, and critical files could be encrypted beyond recovery unless ransom demands are met. The malware’s ability to bypass standard protections and infiltrate connected systems poses a significant challenge to both public and private sector entities.
To counter the threat, National CERT has recommended that organizations immediately strengthen their cybersecurity posture. Measures include adopting multi-factor authentication, enhancing email filtering to detect suspicious links and attachments, and isolating backups from shared networks. In the event of an attack, it advises disconnecting shared drives and offline storage to prevent further spread. Institutions are urged to preserve forensic evidence to aid investigations and support possible legal action against attackers.
The advisory also calls for increased employee awareness and training, emphasizing the importance of recognizing and avoiding suspicious emails, attachments, and download links. Keeping all systems updated with the latest security patches and maintaining robust institutional vigilance are considered essential steps to reduce vulnerability. Organizations are warned not to download files from unverified sources or open questionable attachments, as these remain the most common entry points for ransomware infections.
Director General Dr. Haider Abbas has sent formal warning letters to 39 ministries and key institutions across the federal government, urging immediate preventive action. The recipients include the Cabinet Division, ministries of Interior, Foreign Affairs, Finance, Communications, Privatisation, Religious Affairs, IT and Telecom, Law and Justice, Railways, Commerce, Environment, Industries and Production, and Science and Technology. Other recipients include NECTA, FIA, National Security Division, Establishment Division, Election Commission, National Assembly, National IT Board, PEMRA, NDMA, OGRA, and FBR.
National CERT has underscored the urgency of implementing these safeguards without delay to prevent further spread of BlueLocker ransomware. It reiterated that proactive measures, staff training, and strong digital hygiene practices are the most effective tools in protecting against such high-impact cyber threats.
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