What is Ransomware?
Turkish: Fidye Yazılımı (Ransomware)
Ransomware is malware that encrypts systems or files, blocks access, and demands payment from the victim organization.
What is Ransomware?
Ransomware is malware designed to encrypt files, servers, or backups so an organization cannot operate normally. Modern attacks often add data theft and extortion threats instead of relying only on encryption.
Initial access often comes through phishing messages, weak remote desktop access, unpatched systems, or compromised supplier accounts. Attackers may move laterally, escalate privileges, and try to delete backups before the encryption stage becomes visible.
Prevention and Preparation
Ransomware defense is not just an antivirus decision. Least privilege, MFA, network segmentation, patch management, endpoint monitoring, email security, and separation of admin accounts all matter. For critical systems, immutable or write-protected backup copies make it harder for attackers to destroy recovery options.
A disaster recovery plan should define which systems return first, acceptable data loss, communication ownership, and clean-environment recovery steps. Backups are not reliable until they have been restored in tests. Regular recovery drills reduce uncertainty when an incident is already under way.
Related Terms
A backup strategy defines how often, where, and how data is copied so teams can recover from outages, mistakes, or attacks.
Disaster RecoveryDisaster recovery restores systems after outages or data loss within target RTO and RPO limits through tested plans.
PhishingPhishing tricks users with fake messages or sites to steal passwords, payment data, or approval for unauthorized actions.