Preventing zero-day attacks against your Microsoft 365

Microsoft 365 provides a suite of cloud-based productivity tools that can enhance efficiency, productivity and collaboration, while reducing costs. Used by over a million companies worldwide, Office 365 has become an essential tool for unified communications. However, Microsoft recently warned of several new zero-day vulnerabilities that are used to target their software.

Zero-day attacks are cyber security threats that exploit software vulnerabilities that are unknown to the software vendor and for which no patch or fix exists. These attacks can occur when hackers find and exploit a security weakness in a system before it has been identified and resolved by the vendor. This leaves organisations vulnerable to data theft, financial loss and other forms of cyber crime.

It is crucial to protect business applications and Microsoft 365 from zero-day threats because this can lead to the theft of sensitive data, the compromise of business-critical systems and significant financial or reputational damage.

Zero-day attacks are often difficult to detect and mitigate, which makes it even more important for organisations to take proactive steps to protect against them. With this in mind, there are steps that can be taken to minimise the risk of zero-day attacks against their Microsoft 365 environment.

Using AI to prevent attacks on Microsoft 365

The use of artificial intelligence (AI) is a powerful tool for protecting against zero-day attacks on Microsoft 365. By leveraging AI-based threat detection and response systems, organisations can detect and respond to emerging threats in real-time, even if the attack is previously unknown or has no known signature.

AI systems use machine learning algorithms to analyse large volumes of data and identify patterns that indicate a potential attack. They can be used to monitor user behaviour and detect anomalies that may indicate that an attack is underway.

Security Information and Event Management (SIEM) software is an example of an AI-powered cyber security tool that can be used by organisations to prevent zero-day attacks on Microsoft 365. By automating security processes, AI can reduce the workload on security teams, thus improving their ability to respond to threats quickly and effectively.

Given the current threat landscape, AI should be used as part of a comprehensive security strategy that also includes other measures, such as domain protection and credential harvesting detection, allowing organisations to enhance their defences against advanced threats.

Domain protection and credential harvesting detection

Domain protection, through protocols such as DMARC, SPF, DKIM and DNSSEC, can help prevent zero-day attacks on Microsoft 365 by verifying the authenticity of email messages. This ensures that emails are not delivered to users' inboxes if they are fraudulent or malicious. These protocols help prevent DNS spoofing attacks that can be used to redirect users to malicious websites, thereby enhancing the security of an organisation's email and DNS infrastructure.

Credential harvesting detection is a key security measure. It works by identifying potential attacks that attempt to steal user credentials through phishing or other means. This technology monitors user activity and analyses behaviour patterns, looking for signs of suspicious activity or abnormal login attempts.

By detecting and alerting administrators in real-time, credential harvesting detection can help prevent unauthorised access to user accounts and sensitive data, minimising the impact of a zero-day attack. This approach complements other security strategies such as zero trust principles, virtual sandboxing and shared threat intelligence.

What is virtual sandboxing?

This is a powerful security technology that can help protect against zero-day attacks on Microsoft 365. Sandboxing involves running potentially malicious files or applications in a virtual environment, separate from the main system, where they can be safely analysed for signs of malicious behaviour.

This approach allows security teams to detect and block threats that have not been seen before, as well as new variants of known attacks. By isolating potentially harmful files and applications, sandboxing can prevent them from causing damage to the main system. It can provide insights into their behaviour that can be used to develop new security measures.

Shared threat intelligence

By sharing information about emerging threats and attack patterns with other organisations and security vendors, companies can stay up-to-date on the latest threats and develop more effective countermeasures. This information can include indicators of compromise, threat actors and attack techniques.

Sharing threat intelligence can help organisations better understand the motivations and tactics of attackers, which can inform the development of more targeted and effective security measures. By participating in threat intelligence sharing programs and communities, businesses can gain a more comprehensive view of the threat landscape and improve their ability to defend against advanced threats.

Taking an intelligent approach to zero-day threats

As cyber crime becomes more complex and unpredictable, it is imperative that organisations are proactive in keeping their valuable digital assets safe. By outsourcing cyber protection to a third-party professional, companies do not need large tech teams with specialised skills to ensure cyber resilience.

A third-party professional can bring in-depth knowledge and expertise to the table, which can be difficult and expensive to develop in-house. Outsourcing allows companies to focus on their core business operations, while leaving the management of cyber threats to experienced professionals who can provide 24/7 monitoring, analysis and remediation of any security incidents that may arise. For more information or to get a quote for our cyber security solutions, email us at marketing@seacom.com or leave us a message.

Seacom operates Africa’s most extensive network of information and communications technology (ICT) infrastructure, including multiple subsea cables and secure internet connections tracing both sides of the continent. This is partnered with broad terrestrial fibre networks in Southern and East Africa, extending services to these regions.

Today, Seacom provides holistic ICT solutions covering connectivity, cyber security, cloud, smart networking and communication products that provide African businesses with the necessary building blocks to deliver world-class solutions to their clients. We are privately owned and operated, making us agile and adaptable to the needs of our customers.

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