{"id":70299,"date":"2024-06-27T17:37:23","date_gmt":"2024-06-27T16:37:23","guid":{"rendered":"https:\/\/www.n-able.com\/?p=70299"},"modified":"2025-08-28T10:35:40","modified_gmt":"2025-08-28T09:35:40","slug":"evolving-ransomware-tactics-make-data-exfiltration-a-top-security-concern","status":"publish","type":"post","link":"https:\/\/www.n-able.com\/de\/blog\/evolving-ransomware-tactics-make-data-exfiltration-a-top-security-concern","title":{"rendered":"Evolving Ransomware Tactics Make Data Exfiltration a Top Security Concern"},"content":{"rendered":"

Safeguarding your data is a critical aspect of your cyber risk management strategy and requires a high level of preparedness for events like data breaches. Breaches may still occur despite employing top-tier cybersecurity measures, as cybercriminals are financially motivated to find a way in, leading to cybercriminals attempting to steal your organization\u2019s sensitive data and holding it for ransom. This can result in stolen information being exposed publicly or sold on the dark web for malicious purposes, known as data exfiltration.\u00a0<\/span>\u00a0<\/span><\/p>\n

Data exfiltration has been emerging as a commonly used tactic; as an example\u00a0<\/span>77%<\/a><\/strong><\/span>\u00a0of ransomware attacks involve data exfiltration. While stopping cybercriminals from infiltrating your network is important, preventing them from exfiltrating any valuable data once they\u2019ve gained access is even more crucial<\/span>\u00a0<\/span><\/p>\n

In this blog, we will explore data exfiltration, the techniques cybercriminals use to execute it, and effective methods to minimize the damage it can cause.<\/span><\/b>\u00a0<\/span><\/p>\n

What is Data Exfiltration?\u00a0<\/span><\/h2>\n

Data exfiltration represents a particularly disruptive form of data theft where digital information is illegally transferred, duplicated, or removed from an organization\u2019s environment. Ransomware attackers behind these acts either distribute the stolen information publicly to extort money or sell it on underground markets like the dark web.\u00a0<\/span>\u00a0<\/span><\/p>\n

This emerging trend goes hand-in-hand with extortion and double extortion tactics, where cybercriminals demand a ransom for decrypting data and threaten to leak sensitive information if their demands are unmet.<\/span>\u00a0<\/span><\/p>\n

Contrary to the common use of encryption to lock data and demand a ransom for the decryption key, cybercriminals are now bypassing encryption altogether. Instead, they focus on outright data theft, threatening to release or publicize the stolen information unless a ransom is paid. This shift in strategy shows how the mere acquisition of sensitive data can be as damaging\u2014if not more so\u2014as encryption-based ransomware attacks.<\/span>\u00a0<\/span><\/p>\n

The ramifications of data exfiltration extend far beyond immediate financial losses. Compromised data can disrupt the operations of an organization, jeopardizing everything from day-to-day activities to long-term strategic goals. The potential reputational damage can be devastating, as a breached organization may struggle to regain the trust of customers, partners, and stakeholders.\u00a0<\/span>\u00a0<\/span><\/p>\n

How Do Cybercriminals Exfiltrate Data?\u00a0<\/span><\/h2>\n

One of the primary reasons cybercriminals successfully access and exfiltrate data is social engineering. Cybercriminals can gain initial entry by deceiving users into disclosing confidential information or unknowingly installing malicious software. Once the malware infects the target system, it establishes a shell connection with the compromised computer. This connection acts as a covert communication channel, enabling the cybercriminal to interact directly with the system\u2019s operating environment.<\/span>\u00a0<\/span><\/p>\n

After successfully establishing a foothold, cybercriminals can command the infected computer to begin transferring its data to the cybercriminal\u2019s server. The data transfer is called \u201cdata exfiltration\u201d and is executed to avoid detection. Cybercriminals demonstrate caution by imposing size constraints on the data packets being exfiltrated, minimizing the risk of triggering security alarms.<\/span>\u00a0<\/span><\/p>\n

Additionally, cybercriminals exploit commonly used network protocols such as HTTP, HTTPS, and DNS for exfiltration. These protocols are standard practices for legitimate web traffic and domain name resolution, making them less likely to be blocked or flagged. Using everyday protocols helps cybercriminals maintain a low profile while siphoning off sensitive information from their victims\u2019 networks.<\/span>\u00a0<\/span><\/p>\n

Detecting and Preventing Data Exfiltration\u00a0<\/span><\/h2>\n

Ransomware can strike without warning, leaving organizations to mitigate the fallout. However, taking a proactive approach can significantly reduce the damage and increase your chances of a quick recovery. Here are solutions on how to minimize the impact of a ransomware attack:<\/span>\u00a0<\/span><\/p>\n