Ransomware can be devastating to an individual or an organization, period. The Cybersecurity and Infrastructure Security Agency (CISA) has observed an increase in ransomware attacks across the world and most of these attacks caused the businesses or individual huge sums of monies to recover from their backups as services to their clients went down.
Some victims pay to recover their files. However, there is no guarantee that individuals will recover their files if they pay the ransom. CISA recommends the following precautions to protect users against the threat of ransomware:
- Update software and operating systems with the latest patches. Outdated applications and operating systems are the target of most attacks.
- Never click on links or open attachments in unsolicited emails.
- Backup data on a regular basis. Keep it on a separate device and store it offline.
- Follow safe practices when browsing the Internet. Read Good Security Habits for additional details.
In addition, CISA also recommends that organizations employ the following best practices:
- Restrict users’ permissions to install and run software applications, and apply the principle of “least privilege” to all systems and services. Restricting these privileges may prevent malware from running or limit its capability to spread through a network.
- Use application whitelisting to allow only approved programs to run on a network.
- Enable strong spam filters to prevent phishing emails from reaching the end users and authenticate inbound email to prevent email spoofing.
- Scan all incoming and outgoing emails to detect threats and filter executable files from reaching end users.
- Configure firewalls to block access to known malicious IP addresses.
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