What is Ransomware and How Does It Work?
Ransomware is a type of malware (malicious software) that encrypts a victim's files or locks their computer, effectively rendering them inaccessible to the user. The attacker then demands a ransom payment in exchange for restoring access to the files or device.
Ransomware can infect a computer system through a variety of methods, such as malicious email attachments, fake software updates, or drive-by downloads from compromised websites. Once the ransomware is executed on a victim's device, it can begin to encrypt files or lock the device.
The Different Types of Ransomware
There are several different types of ransomware, each with their own characteristics and methods of operation. Some of the most common examples include:
Also known as leakware or extortionware, this type of ransomware threatens to publish or leak the victim's sensitive information, such as personal files or confidential data, unless the ransom is paid.
Common Threat Vectors for Ransomware Infection
Some common sources that can often lead to a ransomware attack include:
Signs of a Ransomware Attack and How You Can Detect It
Some common signs that may indicate a ransomware attack include:
Best Practices for Protecting Against Ransomware Attacks
Backup your important data regularly, preferably on a separate device or in the cloud. This will allow you to restore your data in the event of a ransomware attack without paying the ransom.
Keep your operating system, software, and applications up-to-date with the latest security patches and updates. Vulnerabilities in outdated software can be exploited by attackers to launch ransomware attacks.
Protecting Business Critical Applications Against Ransomware
Onapsis protects the application layer with the Onapsis Platform and serves an essential part of our clients’ plans to protect their SAP and Oracle applications from ransomware:
- Onapsis provides automatic visibility into critical vulnerabilities, missing important patches and security updates, misconfigurations–identifying all open doors–which is a crucial component for ransomware prevention. Once all possible entry points are identified, they can be closed/addressed, which reduces an organization’s attack surface.
- Through continuous monitoring and real-time alerts, Onapsis helps monitor real-time attempts to access critical SAP and Oracle systems.
- With code analysis prior to moving into production, and in transport, Onapsis can help identify malware or new vulnerabilities before they are released to the public. Code vulnerabilities may appear to be low risk, but we have seen examples like SolarWinds where a small risk can turn into a large security incident. Onapsis generally sees one critical vulnerability per 1,000 lines of code, but our clients generally have millions of lines of custom code. It’s important to close those open doors to prevent any access to business-critical systems.
Developing a Ransomware Incident Response Plan
Protecting against and preparing for Ransomware can be challenging, but the most important best practice is to be prepared and have a plan. According to SANS, there are six steps in order to properly handle a security incident: Preparation, Identification, Containment, Eradication, Recovery, and Lessons Learned.
Annual Tabletop Exercises
CISA Tabletop Exercise Packages (CTEPs) for example, can be a starting point or foundation for your organization’s preparedness. Simulated ransomware attacks enable an organization to identify gaps in incident response plans. This can not only help the IT and security teams feel prepared, but the board and other stakeholders. Practice and preparedness helps teams be measured instead of chaotic in the event of an incident.Read the White Paper whatch on demand webinar
Steps Your Organization Can Take in 2023 to be More Prepared for Ransomware
Steps Your Company Can Take in 2023 to Recover from A Ransomware Attack