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As the world of technology grows, so should the cybersecurity practices that protect it. Implementing a defense strategy against ransomware attacks should be a priority for any individual or organization. Without it, users and organisations face the risk of losing important data and confidential information.
This year, according to statistics worldwide, there is one ransomware attack every 11 seconds, resulting in estimated losses approaching €20 billion. These malicious ransomware often target individuals or organisations that are most likely to pay the required amount to recover their data.
For many organisations, sensitive data and information is a vault. Its loss can have serious consequences and cause irreparable damage that could adversely affect the operation and performance of systems, as well as the reputation of the organization. It is vital to implement best practices to protect against ransomware-type cyber-attacks before they hit their target.
Here is useful information on how you can protect your data from any future cyber-attacks.
What is Ransomware[/B]
Ransomware is a sophisticated form of malware that aims to extract monetary gain from computer users. When the computer is infected by ransomware, its files are encrypted with a strong encryption key and users receive a message from the malicious actors asking for a ransom payment to decrypt their files.
Users are usually asked to pay the absolute value amount or pay with cryptocurrencies, such as Bitcoin, to receive the decryption key and decrypt their files.
Users are usually asked to pay the absolute value amount or pay with cryptocurrencies, such as Bitcoin, to receive the decryption key and decrypt their files. However, there is no guarantee that the malicious actors will keep their promise after receiving the payment. Moreover, Ransomware can cause serious disruption and data loss for users, organizations or businesses, hospitals and schools.
Some of the most common ways in which users are infected by ransomware are. [/LIST]
Types of Ransomware
Ransomware attacks can affect anyone from individual users to large organizations. This type of malware can lock up individual files, such as documents or images, as well as entire databases, resulting in major data breaches or disclosure of sensitive personal information.
There are four main types of Ransomware:
[*]Encryption: Encryption is the most common type of ransomware, which encrypts data and makes it impossible to unlock without the decryption key. [*]Lockers: Lockers restrict the use of the user's computer, making it impossible to work or use basic functions until the ransom is paid. [*]Scareware: Scareware tries to intimidate users into making a purchase of some unnecessary software. In some cases, pop-ups appear that flood the screen, forcing the user to pay to have them removed. [*]Doxware/Leakware: Doxware or Leakware uses the threat as a means of intimidation to leak personal or corporate information unless a fine is paid.
10 best practices Ransomware
There are several ways to protect information systems from a Ransomware-type cyber attack. Due to rapid technological advances, it is very important to follow basic cybersecurity practices and remain vigilant so that you never expose yourself or your business to any Ransomware threats.
1. Back up your data (BackUp)
Backing up your data to an external hard drive and/or a cloud server is one of the easiest risk reduction practices. In the case of a Ransomware attack, the user can clean the computer and reinstall the backed up files. It is recommended that organizations have a strict policy of backing up their most important data at least once a day.
A popular way to do this is the 3-2-1 rule, which reminds you to keep three separate copies of your data, on two different types of storage with one copy disconnected (offline). You can also add an extra step to the process by adding another copy to a storage server on which the data is stored. Keep all systems and software up to date
Always keep your operating system, browser software, anti-virus software and any other software you use updated to the latest available version. Malware, viruses and Ransomware are constantly evolving with new variants that can bypass your old security features, so you should ensure everything is up to date with the latest updates
3. Install some sophisticated antivirus and firewall software
Full versions of anti-malware and anti-virus software are the most common ways to defend against Ransomware. They can scan, detect and respond to cyber threats. However, you will also need to configure your firewall, as anti-virus software only works at the internal layer and can only detect the attack once it has already entered the system.
Firewalls are often the first line of defense against any external attack. They can protect against both software-based and hardware-based attacks. Firewalls are essential for any business or private network, as they can filter and block suspicious data packets from entering the system. Many fake alerts pretend to come from anti-virus software, especially via emails or appearing in Isotope windows. DO NOT click on any links before verifying directly through anti-virus software.
4. Network segmentation
Because Ransomware can spread rapidly across a network, it is important to limit its spread as much as possible in the event of an attack. The implementation of network segmentation divides the network into many smaller networks so that the organization can isolate Ransomware and prevent it from spreading to other systems.
Each individual subsystem should have its own security controls, firewalls, and unique access to prevent Ransomware from accessing targeted data. Partitioning access will not only prevent spread to the main network, but will also give the security team more time to detect, isolate and neutralize the threat.
5. Email Protection
Historically, phishing attacks have been the leading cause of malware infections. In 2023, 54% of Managed Service Providers (MSP Managed Service Providers ) reported phishing as the top method of Ransomware delivery. Another report published by the FBI, phishing scams were ranked as the top criminal offense in 2020, resulting in losses or thefts exceeding $4.2 billion.
There are several ways in which Ransomware can infect a user via email:
- Receiving suspicious attachments via email
- Clicking on links leading to compromised websites
- Social engineering: tricking users into exposing sensitive information.
In addition to antivirus software, you can take additional precautions using practices or technologies such as. [*]Keep client email applications up to date - Do not allow cybercriminals to take advantage of security vulnerabilities from outdated technology. [*]Sender Policy Framework (SPF) - Email authentication technique to determine specific email servers from which outgoing messages can be sent. [*]DomainKeys Identified Mail (DKIM) - Provides an encryption key and digital signature to verify that the email was not forged, counterfeit or altered. [*]Domain Message Authentication Reporting and Compliance (DMARC) - Further authenticates email messages by mapping the SPF and DKIM protocols.[/LIST]
6. Application whitelisting-Whitelisting
The whitelist determines which applications can be downloaded and executed on a network. Any unauthorized program or website not on the allowed list will be restricted or blocked if an employee or user accidentally downloads an infected program or visits a corrupted website. Using allowed list software such as Windows AppLocker, you can also blacklist or block specific programs and websites
7. Endpoint Security - Endpoint Security
Endpoint security should be a priority for growing businesses. As businesses begin to expand and the number of end users increases, this creates more endpoints (laptops, smartphones, servers, etc.) that need to be secured. Each remote endpoint creates a potential opportunity for criminals to access personal information or, worse, the main network.
Whether you run your business from home or work as part of a larger company, try to install endpoint protection (EPP) or endpoint detection and response (EDR) platforms for all network users. These technologies allow system administrators to monitor and manage security for each remote device. EDR is slightly more advanced than EPP, focusing on addressing and responding to immediate threats that have infiltrated the network.
EPPs and EDRs typically include a range of protection tools, including.
- Antivirus and anti-malware
- Data encryption
- Data loss prevention
- Intrusion detection
- Web browser security
- Mobile and desktop security
- Network assessments for security groups
- Real-time alerts and security alerts.
8. Limit User Access Privileges - Limit User Access Privileges
Another way to protect your network and systems is to limit user access and permissions to only the data they need to operate. This idea of "least privilege" limits who can access key data. In this way, you can prevent ransomware from spreading between systems within a company. Even with access, users may face limited functionality or resources, as defined in a role-based access control (RBAC) policy.
Least privilege typically involves a zero-trust model that assumes that internal or external users are not trustworthy, which means they will require authentication at each level of access. Verification typically requires at least two-factor authentication (2FA) or multi-factor authentication (MFA) to prevent access to target data in the event of a breach
9. Perform regular security testing - Regular Security Testing
Implementing new security measures should be a never-ending task. As ransomware tactics continue to evolve, companies must perform regular cybersecurity testing and assessments to adapt to changing environments. Companies should constantly:
- Reassess user permissions and access points
- Identify new system vulnerabilities
- Create new security protocols.
Sandbox testing is a common strategy for testing malicious code against running software in an isolated environment to determine if security protocols are adequate.
10. Security Awareness Training - Security Awareness Training
Because end users and employees are the most common gateway to cyber attacks, one of the most important trainings a company can provide is security awareness training. Phishing and social engineering tactics can easily take advantage of unsuspecting, ill-equipped users. Having basic cybersecurity knowledge can greatly impact and even prevent attacks at the source.
Some key security training practices that should be provided are:
- Secure web browsing
- Create strong, secure passwords
- Use secure VPNs (without public Wi-Fi)
- Identify suspicious emails or attachments
- Keep systems and software up to date
- Confidentiality training
- Provide an emergency reporting channel for suspicious activity.
What to do after a Ransomware attack
Of course, despite the security measures in place, it is still possible to become a victim of Ransomware. Part of your security plan should include what to do immediately after an infection or attack and appropriate steps to mitigate the damage. Organizations should establish clear lines of communication and emergency response procedures in advance so that all users understand what to do in the event of an attack. Some immediate steps to take are:
- DO NOT pay the ransom - Security experts and law enforcement agencies strongly advise against paying the ransom, as this only encourages attackers to continue their criminal activity. In many cases, there is no guarantee that the attackers will provide a working decryption key. Even with a key, data can be corrupted, resulting in permanent loss. There are now free Ransomware decryption tools available for certain types of ransomware, but it is still important to have a data backup.
- Isolate infected systems, Isolate infected systems - To avoid further compromise, users should immediately disconnect their device from the network and all wireless connections (Wi-Fi, Bluetooth). Although Ransomware may have already affected other users, isolation can limit the scope of infection on the network.
- Identify the source - Identify the source - Identifying the source of the malware can help identify the entry point of the Ransomware. This information can provide the organization with valuable information to further improve security practices and training.
- Report attack to authorities - Ransomware is a crime that should be reported to authorities for further investigation. However, another advantage is that law enforcement agencies may have access to more advanced recovery tools and software not available to most organizations. In some cases, it is possible to recover stolen or compromised data and apprehend the perpetrators.
Good Ransomware defense practice starts before any attack occurs.
It may already be too late to take action if Ransomware attacks your network. From backing up your files to installing strong antivirus viruses and firewalls to cyber training, you'll want to stay prepared for every possible scenario.
(OP/SX)
Contents of this article including associated images are owned by PIO
Views & opinions expressed are those of the author and/or PIO
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