Jakarta, INTI – Cyberattacks, particularly ransomware, are becoming increasingly concerning in Indonesia. The National Cyber and Crypto Agency (BSSN) recorded over 120 million cyberattacks throughout 2024, with ransomware being the primary threat. The disruption at the National Data Center (PDN) last year demonstrated the massive impact of cyberattacks on public services and business sectors.
Ransomware: How It Works and Its Impact
Ransomware is a type of cyberattack in which hackers encrypt a victim’s data and demand a ransom payment for its recovery. These attacks typically spread through phishing emails, security vulnerabilities, or malicious software.
How Does Ransomware Work?
- Initial Infection – Hackers infiltrate a system with ransomware through malicious email links or attachments, pirated software, or unsecured networks.
- Data Encryption – Once inside the system, the ransomware encrypts critical files, rendering them inaccessible to users.
- Ransom Demand – The victim receives a message demanding payment (usually in cryptocurrency) to obtain the decryption key.
- Additional Threats – In some cases, hackers also steal data and threaten to leak it if the ransom is not paid.
Ransomware can have devastating consequences, including loss of important data, operational disruptions, and significant financial losses. Some cases even involve the exposure of sensitive information, damaging the reputation of affected companies or institutions.
The Impact of Cyberattacks on the Financial Sector
Cyberattacks also pose a serious threat to the banking sector. Banking analyst Paul Sutaryono states that service disruptions due to cyberattacks can cripple customer transactions and destabilize the economy. The larger the bank affected, the greater the impact on the national financial system. Therefore, risk mitigation is crucial, despite the high costs involved, which may affect banking services.
Risk Mitigation and Preventive Measures
The FBI and the Cybersecurity and Infrastructure Security Agency (CISA) have also issued warnings about a new ransomware variant called Ghost, which has spread to over 70 countries. To prevent such attacks, companies and individuals are advised to:
- Regularly back up systems and store backups separately from the main system.
- Install the latest security patches to close vulnerabilities exploited by hackers.
- Use network segmentation to limit malware spread.
- Implement multi-factor authentication to enhance phishing resistance.
- Increase cybersecurity awareness through training for employees and system users.
Conclusion
With the growing threat of ransomware and other cyberattacks, implementing mitigation strategies such as system updates, regular backups, network segmentation, and cybersecurity education is essential to strengthen defenses against the increasingly sophisticated digital threats.
To stay updated on the latest technology event, visit : INTI 2025