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    Home»News»Nearly 75% of healthcare organizations data encrypted by cybercriminals in 2023
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    Nearly 75% of healthcare organizations data encrypted by cybercriminals in 2023

    mmBy ITPulseNovember 2, 2023
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    A survey by Sophos has revealed that nearly 75 percent of healthcare organisations data have been encrypted by cybercriminals, leaving only 24 percent that was able to disrupt a ransomware attack before attackers encrypted their data.

    The survey “The State of Ransomware in Healthcare 2023,” also shows that this is the highest rate of encryption in the past three years and a significant increase from the 61% of healthcare organizations that reported having their data encrypted last year.

    It is also an indication that the number of ransomware attacks before the attackers encrypted their data—down from 34% in 2022, which is also the lowest rate of disruption reported by the sector over the past three years.

    “To me, the percentage of organizations that successfully stop an attack before encryption is a strong indicator of security maturity. For the healthcare sector, however, this number is quite low—only 24%. What’s more, this number is declining, which suggests the sector is actively losing ground against cyber attackers and is increasingly unable to detect and stop an attack in progress,” said Chester Wisniewski, director, field CTO, Sophos.

    Chester added that part of the problem is that ransomware attacks continue to grow in sophistication, and the attackers are speeding up their attack timelines.

    In the latest Active Adversary Report for Tech Leaders, we found that the median time from the start of a ransomware attack to detection was only five days. We also found that 90% of ransomware attacks took place after regular business hours. The ransomware threat has become too complex for most companies to go at it alone. All organizations, especially those in healthcare, need to modernize their defensive approach to cybercrime, moving from being solely preventative to actively monitoring and investigating alerts 24/7 and securing outside help in services like managed detection and response (MDR),” Chester explained.

    Meanwhile, additional key findings from the report include:

    • In 37% of ransomware attacks where data was successfully encrypted, data was also stolen, suggesting a rise in the “double dip” method
    • Healthcare organizations are now taking longer to recover, with 47% recovering in a week, compared to 54% last year
    • The overall number of ransomware attacks against healthcare organizations surveyed declined from 66% in 2022 to 60% this year
    • Compromised credentials were the number one root cause of ransomware attacks against healthcare organizations, followed by exploits
    • The number of healthcare organizations surveyed that paid ransom payments declined from 61% last year to 42% this year. This is lower than the cross-sector average of 46%

    “In 2016, the Red Cross Hospital of Córdoba in Spain suffered a ransomware attack that reached servers and encrypted hundreds of files, medical records and other important patient information. It was a major disruption to our operations and interfered with our ability to care for our patients. The stakes are high in ransomware attacks against healthcare organizations—and attackers know that—meaning we’ll always be a target. After this ransomware attack, we worked hard with Tekpyme to bolster our defenses, and now we have reduced our incident response time by 80%. I think the industry as a whole is making improvements, but there is still work to do, because of the constantly changing nature of cybercrime. Hopefully, healthcare organizations can leverage the help that is available from security vendors such as Sophos to prevent a genuine ‘threat to life’ if systems go offline due to a ransomware attack,” said José Antonio Alcaraz Pérez, head of information systems and communications at Cruz Red Andalusia in Spain.

    “Cyberspace today is ripe with technically sophisticated actors looking for vulnerabilities to exploit. What all this translates to is a multidimensional cyber threat of actors who have the tools to paralyze entire hospitals. Partnering with the private sector is critical to our mission. The information [they] share has real-world impacts and can save real businesses and real lives,” said Christopher Wray, FBI Director.

    To be safe, Sophos recommends the following best practices to help defend against ransomware and other cyberattacks:

    • Strengthen defensive shields with:

    o   Security tools that defend against the most common attack vectors, including endpoint protection with strong anti-ransomware and anti-exploit capabilities

    o   Zero Trust Network Access (ZTNA) to thwart the abuse of compromised credentials

    o   Adaptive technologies that respond automatically to attacks, disrupting adversaries and buying defenders time to respond

    o   24/7 threat detection, investigation and response, whether delivered in-house or by a specialized Managed Detection and Response (MDR) provider

    • Optimize attack preparation, including regularly backing up, practicing recovering data from backups and maintaining an up-to-date incident response plan
    • Maintain security hygiene, including timely patching and regularly reviewing security tool configurations

     

    Cybercriminals Healthcare
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