Most businesses today rely on the cloud to store data and manage their IT operations. However, while the cloud offers many advantages, it’s also a prime target for hackers. According to an IBM report, 82% of breaches involve data stored in the cloud, resulting in costly data breaches and reputational damage.
In this article, we’ll explore the nature of cloud ransomware, why it’s on the rise, and most importantly, how you can protect your cloud data.
What is Cloud Ransomware?
Simply put, cloud ransomware is a form of malware designed specifically to target data stored in the cloud.
This kind of ransomware is on the rise. With 94% of businesses storing data in the cloud, ransomware hackers are increasingly targeting cloud infrastructure.
Unlike traditional ransomware that primarily focuses on encrypting local files, cloud ransomware aims to exploit the vulnerabilities of cloud environments. Its primary goal is to gain unauthorized access to sensitive data stored in the cloud, exfiltrate this information, and then demand the victim pay a ransom—usually millions of dollars in bitcoin.
How Does Cloud Ransomware Work?
While the cloud offers many advantages in terms of scale and convenience, it’s not immune to ransomware attacks.
Cloud ransomware exploits vulnerabilities in cloud services, applications, and infrastructure to gain unauthorized access to data.
Let’s take a look at the four primary attack methods:
- Local Device Compromise
Cybercriminals initially target an individual’s computer or mobile device. Once the local device is infected with ransomware, the malware lies in wait for the device to connect to cloud storage services.
When the compromised device syncs with cloud storage, the ransomware exploits the automatic file synchronization feature used by most cloud services. As infected files are uploaded to the cloud, they can potentially overwrite clean versions stored there, effectively spreading the infection to the cloud environment and potentially to other connected devices.
- Phishing Attacks
Cybercriminals can gain direct access to an organization’s cloud systems through phishing emails and social engineering techniques, tricking employees into revealing login credentials or other sensitive information.
- Vendor System Exploitation
Large companies often rely on a network of vendors with special access to their systems. Hackers target these vendors, especially smaller ones with limited cybersecurity resources, to gain entry into larger companies’ systems through these “side doors.”
Tip: Check out our article on Supply Chain Attacks to learn how to protect your organization’s data from attacks on vendors and partners.
- Cloud Service Provider Attacks
Some attackers target cloud service providers directly. By compromising a provider’s infrastructure, they can potentially access data from multiple businesses in a single attack.
While this doesn’t happen so often, when it does, the consequences can be devastating. For example, Danish cloud host CloudNordic reported that the majority of their customers lost all their data after it was wiped out by a ransomware attack.
Private vs Public Clouds and Ransomware
You may wonder whether private or public clouds are safer. Private clouds are often considered more secure because access is limited to authorized users within an organization. Public clouds, on the other hand, are managed by third-party providers and can be accessed by anyone with proper credentials.
However, both types of clouds are vulnerable to ransomware attacks. Think about it this way: just because your local area network is private, is it not still vulnerable to security risks? Of course it’s vulnerable. The same principle applies to cloud environments.
Similarly, public clouds aren’t inherently less secure—major providers like Amazon Web Services, Google Cloud, and Microsoft Azure invest heavily in security measures.
The real determining factor in cloud security is how well you implement and maintain security best practices, regardless of whether you’re using a private or public cloud.
How to Keep Your Cloud Data Safe from Ransomware
Here are key best practices to enhance your cloud security and minimize the risk of ransomware attacks:
- Implement threat detection and response
ProLion’s DataDefense monitors your network 24/7 and detects threats in real-time. It recognizes file extensions typical of ransomware, and suspicious user behavior, and immediately blocks known threats that may have bypassed endpoint protection, before they infect your local network and your cloud infrastructure. This proactive approach allows for quick response to potential attacks, minimizing damage and downtime.
- Implement a comprehensive backup and recovery strategy
While backups won’t prevent data leaks, they are crucial for quick recovery after an attack. ProLion’s DataDefense offers a granular restore function, allowing you to recover only the affected files instead of a system-wide restore that can take weeks. This targeted approach significantly reduces downtime and data loss in the event of an attack.
Make sure you have a solid strategy in place to protect your backups from ransomware, as well.
- Educate and train your team
Human error remains a significant factor in ransomware infections. Conduct regular training sessions to help staff identify potential threats, such as phishing emails or suspicious file attachments.
- Regularly review and update security configurations
Conduct periodic reviews and technical audits of your cloud setup to prevent vulnerabilities due to misconfigurations or out-of-date software.
Protect Your Data from Ransomware with ProLion
As ransomware attacks continue to increase, it’s critical to protect your organization’s data—both on-prem and in the cloud.
DataDefense from ProLion delivers a last line of defense at the storage level, keeping your data safe. In the unlikely event a hacker does get through, you can restore the files you need with one click.
Don’t wait for a breach. Connect with one of our cybersecurity experts today or download our free whitepaper to learn more about the best ransomware protection strategies.
