WHAT IS RANSOMWARE?
Ransomware is a type of malicious software cyber actors use to deny access to systems or data. The malicious cyber actor holds systems or data hostage until the ransom is paid. After the initial infection, the ransomware attempts to spread to shared storage drives and other accessible systems. If the demands are not met, the system or encrypted data remains unavailable, or data may be deleted.
HOW DO I PROTECT MY NETWORKS?
A commitment to cyber hygiene and best practices is critical to protecting your networks. Here are some questions you may want to ask of your organization to help prevent ransomware attacks:
1. Backups: Do we backup all critical information? Are the backups stored offline? Have we tested our ability to revert to backups during an incident?
2. Risk Analysis: Have we conducted a cybersecurity risk analysis of the organization?
3. Staff Training: Have we trained staff on cybersecurity best practices?
4. Vulnerability Patching: Have we implemented appropriate patching of known system vulnerabilities?
5. Application Whitelisting: Do we allow only approved programs to run on our networks?
6. Incident Response: Do we have an incident response plan and have we exercised it?
7. Business Continuity: Are we able to sustain business operations without access to certain systems? For how long? Have we tested this?
8. Penetration Testing: Have we attempted to hack into our own systems to test the security of our systems and our ability to defend against attacks?
HOW DO I RESPOND TO RANSOMWARE?
Implement your security incident response and business continuity plan. It may take time for your organization’s IT professionals to isolate and remove the ransomware threat to your systems and restore data and normal operations. In the meantime, you should take steps to maintain your organization’s essential functions according to your business continuity plan. Organizations should maintain and regularly test backup plans, disaster recovery plans, and business continuity procedures.
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- Paying a ransom does not guarantee an organization will regain access to their data; in fact, some individuals or organizations were never provided with decryption keys after having paid a ransom.
- Some victims who paid the demand have reported being targeted again by cyber actors.
- After paying the originally demanded ransom, some victims have been asked to pay more to get the promised decryption key.
- Paying could inadvertently encourage this criminal business model.
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