Ransomware is a type of malicious software that encrypts an organization's data to make it inaccessible and demands money in exchange for unlocking the data. Having become one of the most widespread and most destructive cyber threats in recent years, ransomware targets businesses of every size. At Gelecek İnternet, we help businesses build a multi-layered defense against this threat.

How Does Ransomware Spread?

Ransomware usually infiltrates systems through the following means:

• Phishing emails containing malicious attachments
• Exploitation of software with security vulnerabilities
• Files downloaded from untrustworthy websites
• Remote desktop connections protected by weak passwords
• Infected USB drives connected to the network

What Happens After an Attack?

When ransomware infects a system, your files are encrypted and a ransom note appears on the screen. Experts emphasize that paying the ransom is strongly discouraged; because even if payment is made, there is no guarantee the data will be returned, and this situation emboldens the attackers. The most effective solution is to restore the data from up-to-date and isolated backups taken before the attack.

Protection Methods

1. Up-to-date backup: Regular and isolated (network-disconnected) backups are the strongest defense against ransomware. If your backups are also encrypted, they are useless, so at least one copy should be kept offline or on a separate medium.
2. Security software: Up-to-date antivirus and endpoint protection solutions detect known threats.
3. Software updates: Do not delay updates in order to close security vulnerabilities in the operating system and applications.
4. Email filtering: Block phishing emails and malicious attachments before they reach the user.
5. Access control: Give users access only to the resources they need (the principle of least privilege).

Employee Awareness

The vast majority of ransomware attacks stem from human error. An employee opening a suspicious attachment can put the entire network at risk. For this reason, employees regularly receiving cybersecurity awareness training is as important as technical measures. Recognizing suspicious emails, using strong passwords and verification habits prevent a crisis.

Network Segmentation

Dividing your network into segments prevents ransomware that infects one segment from spreading to the entire system. Keeping critical systems in separate segments limits the impact of a possible attack.

What to Do During an Attack

When ransomware is detected, immediately isolate the affected devices from the network, record the incident and get expert support. Acting in panic can increase the damage; a planned response is critically important.

To set up multi-layered protection against ransomware for your business, create isolated backup solutions, or have a security assessment performed, you can contact us at destek@gelecekint.com.