The likelihood of data theft in a ransomware attack is higher than one in 10, and it's predicted to grow as criminals target businesses prepared to pay to avoid exposure, according to researchers.
ID Ransomware received 100,001 submissions related to attacks by ransomware groups that targeted public- and private-sector organizations between Jan. 1, 2020, and June 30, 2020. Of these submissions, 11,642 were linked to attacks by groups that overtly steal data, report Emsisoft researchers, who sought to learn how common "exfiltration and encryption" attacks are.
Businesses that would suffer the greatest harm from information exposure, and are most likely to pay to prevent it, are attractive targets for these attacks. The legal, healthcare, and financial industries are hardest hit, and they pay far more than the cost of avoiding exposure. In addition to business interruption and recovery, they incur costs related to reputation damage, legal fees, regulatory penalties, loss of intellectual property, and/or the disclosure of competitive data.
"Exfiltration+encryption attacks combine the disruption of a ransomware incident with the long term impact of a data breach," experts say in a blog post on the trend. These attacks also give attackers the means to plan future activity in a target network, they note, and stolen data can be used to launch phishing campaigns against the victim company and its clients and partners.
In 2019, they say, at least 966 government entities, educational institutions, and healthcare providers were hit with ransomware. While only the City of Pensacola, Fla., had its information stolen and published in 2019, this year has seen at least nine more ransomware groups start to exfiltrate data as well. If 966 entities are affected again in 2020, it's likely 106 of them will have data stolen and published. This would be a "best case scenario," experts note, as attackers who target the public sector are the same ones who overtly steal data.
It's important to note the 11% likelihood is probably higher because it only reflects the percentage of attackers who overtly steal data and threaten to expose it. Some attackers covertly take data, and while they may not take as much, they may target data with a specific value.
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