How the Cloud Changes Perimeter Security

22 Feb 2018, MOQdigital Marketing

Journey to the Cloud

Cloud perimeter image

The Cloud has not only changed how businesses operate, but also how they should be engaging with security.

Companies need to acknowledge that now that their critical data and apps have migrated into the Cloud, traditional perimeter security measures are no longer effective. The Cloud is not only changing where corporate data is stored but also how it is accessed – and how vulnerable it is to new kinds of attack. Data centres are vulnerable cyber-threats on a daily occurrence in the corporate world. Cyber-attacks can have a significantly negative impact on companies, and a single data breach carries a high cost and long recovery times. This is because the Cloud now connects to a significant portion of company data. Cloud applications and mobility have made it so that data can be accessed anywhere, anytime – an asset to companies but also a gateway for new and significant threats. A single phishing email can have IT staff working for days to resolve and recover from the issue, and a virus that infiltrates one data network could have a negative flow-on effect throughout a system. It is crucial for companies to acknowledge that the Cloud has shaped, and will continue to shape cybersecurity measures, and that existing strategies can be bolstered to reduce risk. Perimeter security alone is no longer enough to protect data networks. Fortunately, steps can be taken to prevent and lessen these risks.

Perimeter Security

Traditionally, Perimeter Security controlled and monitored how traffic flowed in and out of data networks, and companies could include defences, such as firewalls, to protect against any attacks coming via these channels. These defences are still capable of risk reduction; however, due to advancements in The Cloud, perimeter security has lost much of its power. Perimeter Security alone is not enough to block a significant cyber-attack, nor is it capable of recovering data after a large-scale loss. The solution to this is to employ multi-layered security, intelligence-driven network monitoring, as well as thorough incident response and recovery strategy.  Old methods, such as firewalls and standard intrusion and prevention systems (IDS/IPS) still have a place as part of this strategy and should not be discarded. In fact, modern firewalls have adapted to meet the needs of the current market and are an excellent addition to any network security. In fact, it is worth noting that Perimeter Security should be evolved, not discarded. Some GRC frameworks also call for compliance standards regarding perimeter defences and network access controls, so wholly replacing traditional perimeter defences could have detrimental compliance consequences. Companies looking to improve their cloud security should be:

  • Understanding where their data is and where it is communicated, even after a service is terminated
  • Creating backups of their data
  • Establishing a reliable response and recovery strategy
  • Educating employees about cloud and network security, including how to identify phishing emails, viruses, malware…etc, and how to avoid them
  • Establishing a multi-layered security network around their perimeter that includes threat detection, prevention, and response. 


If you are unsure about how to secure your cloud network, reach out to a MOQdigital consultant today. As leaders in cloud innovation we can help you reduce your risk in a cloud-oriented market. Secure your success in 2018, contact us today.