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    From IT Giants to Hospitals: How Zero-day Attacks Harm Organizations and Ways to Prevent Them

    Lakisha DavisBy Lakisha DavisSeptember 29, 2023Updated:September 29, 2023
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    7 Highly Effective Ways To Prevent Those Unexpected Zero-Day Attacks
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    Zero-day vulnerabilities can significantly damage a business because the company doesn’t know about the vulnerability ahead of time. As the number of software options grew over time, so did the number of vulnerabilities driven by tools like ChatGPT. In 2021, more zero-day vulnerabilities were exploited than in the entire period of 2018 to 2020. 

    According to a Microsoft report, patches typically become available within 14 days of a vulnerability being revealed, and this period of time becomes a hacker’s goldmine. Even experienced IT specialists can fall victim. So robust cybersecurity is vital, especially preventive measures such as security testing. 

    • Cases of Zero-Day Attacks

    In early 2022, North Korean hackers exploited a zero-day vulnerability in Google Chrome. They used phishing emails to direct victims to fake websites, leveraging the vulnerability to install spyware and remote access malware. The vulnerability was later patched, but the extent of data stolen remains unknown due to the hackers’ effective evasion.

    In 2020, hackers offered critical zero-day vulnerabilities for Zoom, including one for Windows and one for MacOS, that could potentially allow them to hack into Zoom and spy on calls. These vulnerabilities, which are undisclosed flaws in Zoom’s software, are highly coveted among hackers. The Windows vulnerability is being sold for $500,000 and provides access to the Zoom app. Zoom is taking these claims seriously and investigating the matter. The FBI has warned about Zoom hijacking, and the U.S. Senate has advised against using Zoom due to privacy concerns. 

    In August 2021, the “PwnedPiper” zero-day vulnerability affected hospital pneumatic tube systems used for transporting medical items. Attackers exploited flaws in the control panel software, enabling unauthorized and unencrypted firmware updates.

    In August 2020, zero-day vulnerabilities in the healthcare records app OpenClinic exposed patient test results. Users were advised to discontinue its use because developers didn’t address four reported zero-days. Unauthorized actors managed to access files with protected health information (PHI).

    What Consequences do Zero-Day Vulnerabilities Cause?

    Immediate Exploitation: Attackers can breach systems before patches are available, allowing them to operate undetected.

    Data Exfiltration: Attackers can gain control of systems, eventually leading to data theft and compromise.

    Widespread Breaches: Zero-day vulnerabilities can go unaddressed for months, leading to widespread breaches that compromise user privacy and data integrity.

    Market for Exploits: Hackers exploit these vulnerabilities, and multiple groups can take advantage, increasing opportunities for cyberattacks. That fuels the market for zero-day exploits.

    Financial Loss and Reputation Damage: Exploitation of zero-day vulnerabilities can result in financial losses and harm a business’s reputation due to sensitive data theft and operational disruptions.

    Spying: Zero-day vulnerabilities might become weapons for government-sponsored groups or malicious actors for spying or cyber warfare. That can lead to severe consequences like disrupting critical infrastructure, stealing sensitive data, or even causing physical harm.

    How to Prevent Zero-Day Exploits?

    A comprehensive cybersecurity strategy is essential. Regularly monitor your software, hardware, and network. Train your team to follow safe computing practices, especially when working remotely.

    • Software Security:
    • Implement continuous monitoring for policy compliance.
    • Assess vulnerabilities, including citizen-developed apps using open-source and low-code/no-code tools.
    • Keep software updated to counter legacy application vulnerabilities.
    • Hardware Security:
      • Identify vulnerable devices and apply zero-trust segmentation.
      • Restrict communication to essential functions to reduce the attack surface and limit lateral movement.
    • Network Security:
      • Use network segmentation to divide the network into multiple segments.
      • Prevent attackers from accessing the entire network by breaching one part, limiting potential damage.
    • Employee and User Training:
      • Educate individuals on zero-day operations and their nature.
      • Enhance cybersecurity awareness among employees and users, both professionally and personally.
      • Promote self-protection standards and awareness controls.
      • Enforce multi-factor authentication and strong password policies.
      • Implement proper access controls to restrict unauthorized system, application, and data access.
    • Professional Community Engagement:
      • Share information and collaborate through channels like MS-ISAC and fusion centers.
      • Facilitate a swift response to advanced persistent and nation-state threats.
      • Strengthen cybersecurity efforts, restore confidence, and protect national security.

    Finally, a proactive approach is crucial. Conduct regular cybersecurity audits and assessments. Businesses must create security programs that detect and disrupt unusual activities by understanding “normal” behaviors, ensuring operational resilience. 

    To Sum Up

    Zero-day vulnerabilities pose significant threats to organizations across various sectors, from IT giants to healthcare facilities. These undisclosed flaws in software can lead to devastating consequences, including data breaches, operational disruptions, and even espionage. As the number of software options continues to grow, the frequency of zero-day exploits has risen, making robust cybersecurity measures essential. To prevent zero-day exploits, a multifaceted approach is necessary. In an ever-evolving threat landscape, organizations must remain vigilant, adapt to emerging challenges, and prioritize cybersecurity to safeguard their operations, data, and reputation.

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    Lakisha Davis

      Lakisha Davis is a tech enthusiast with a passion for innovation and digital transformation. With her extensive knowledge in software development and a keen interest in emerging tech trends, Lakisha strives to make technology accessible and understandable to everyone.

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