Universities and higher education institutions were some of the most popular targets in 2021. According to Microsoft, education is the most targeted industry by malware, with 83% of malware encounters in the last 30 days affecting this industry.
In March 2021, the UK’s National Cyber Security Center published an alert outlining an increase in ransomware attempts against the UK education sector.
Then, at the end of 2021, researchers observed an advanced persistent threat group, Aquatic Panda, specifically targeting universities with Log4J exploits.
So why is the education sector such a hot target, and what else can we learn from 2021?
Remote Learning Increases Attack Surface for Higher Education
Universities hold useful data and intellectual property, yet they rarely have the resources to defend their networks that other companies do.
Furthermore, their attack surfaces have increased rapidly over the past two years. Most businesses have been increasingly adopting new cloud and digital platforms, enabling them to be far more effective than in the past. Education institutions are no exception to this trend; many have had to quickly respond to challenging remote working conditions to add new capabilities to engage learners and store files.
Ransomware risks heightened
In May and June 2021 the UK education sector experienced a wave of ransomware attacks. NSCS, who published an alert on the surge, reported that these attacks led to “the loss of student coursework, school financial records, as well as data relating to COVID-19 testing”.
As we have discussed at length before, a common technique for ransomware operatives is to add pressure to the victims by publishing stolen data online. According to Digital Shadows’ Intelligence, there were 86 victims of “double-extortion” ransomware in 2021.
Supporting the successful ransomware efforts were Initial Access Brokers, who offered access to 28 education institutions in 2021. Previous research by Photon, An Excess of Access, found access to education was offered for an average of $4,118.
Lack of availability
On some occasions, the intended motivation of the threat actor isn’t clear. In May 2021, a DDoS attack impacted over 200 Belgian websites, which included those owned by universities and research institutes.
By targeting Belnet, and ISP, the attacks overwhelmed the websites with traffic, rendering their public-facing sites unusable for visitors, cutting off internal systems from the internet. Attackers reportedly used a diverse arrange of techniques, which were consistently altered throughout the attack.
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