Given the simplicity and low cost of the public cloud, it is becoming evident that companies turn to Amazon Web Services, Microsoft Azure, and Google Cloud Platform. It is easy to create a new account in minutes, increase or decrease resources as needed, all by paying only for what is used and avoiding paying high costs for hardware.
Although the public cloud eliminates the need for hardware, it is nevertheless the source of new puzzles. The secret to effective cloud application security is to improve it globally – guarantee the protection and correct configuration of your architecture, obtain visibility on your infrastructure, and, very importantly, on who can access it.
On paper, cloud risk management sounds simple, but the reality is quite different. The rapid growth in cloud use has fragmented the distribution of data, with resources dispersed in several disparate bodies and, for some companies, multiple platforms. An average business already uses 2 public clouds to run applications, while experimenting in parallel other public Clouds. This multi-Cloud approach poses a visibility problem for IT teams who are forced to switch from platform to the other to get a complete picture of their cloud assets.
Lack of visibility into cloud-based resources results in both security and compliance risks.
It sounds obvious, but security is handled a little differently in the cloud. Public Cloud providers, such as Amazon Web Services, Microsoft Azure, and Google Cloud Platform, use a shared responsibility model. They ensure the safety of the Cloud, while you are responsible for everything placed in that Cloud.
The physical protection of data centers and the virtual separation of customers and environments are fully supported by public cloud providers. You may be granted some basic firewall rules to manage access to your environment. But if you do not configure them correctly (for example if you leave ports open to the wind), you will be solely responsible. This is why it is important to understand your cloud application security responsibilities.
Having multiple cloud environments is no longer a preferred strategy. It is the opposite that has become THE essential strategy. You may need to use several Cloud environments for several different reasons: availability, more adaptability, or some special features. When planning your cloud security controls and risk management strategy, start from the principle that you will use several different Cloud servers. If this is not the case today, it is will surely be in the near future. In this way, you can make your approach sustainable.
Think about how you will manage the security, monitoring, and compliance of multiple Cloud servers, with separate systems and consoles. The simpler the management, the simpler it decreases incident response time, increases threat detection, and reduces the puzzle of compliance audits. Not to mention better retention of your qualified staff. Look for agentless solutions that allow you to monitor multiple environments of Cloud from a single SaaS console, reduce the number of tools, staff, and time needed to manage security on a diverse set of cloud accounts.
You can’t secure what you can’t see and this one of the main obstacles. Having a good cloud application security strategy means complete visibility into your infrastructure. Take advantage of tools that provide real-time visualization of network topology and traffic flow, with a full inventory including hosts, networks, account users, storage services, containers, and serverless functions.
For more visibility, look for tools that can identify possible vulnerabilities within your architecture to prevent any potential point of rupture. Risk areas include:
By transferring your resources to the Cloud, you must respect the compliance rules on a more distributed network, which often involves regular development of versions. To ensure compliance, you must create an accurate inventory report and network diagrams of your cloud footprint, and ensure that the list of Compliance verification is observed in a dynamic environment.
When it comes to meeting audit deadlines, companies often fall back on the short-term solutions of diverting resources from commercial projects that are profitable. However, this solution is not viable in the long term and, like daily snapshots become obsolete quickly and do not allow monitoring continued compliance for standards such as ISO 27001, HIPAA, and GDPR.
Automating security has become a real issue, as cybercriminals themselves use more and more automation to carry out their attacks. They use, for example, user credentials stolen to automate the provisioning of instances to achieve fraudulent activities such as cryptojacking, changing account settings, or revoking legitimate users to avoid detection.
Indeed, it is now common for cloud environments to be targeted for vulnerabilities, security in passwords, security group settings, or code.
To ensure cloud security controls, take a look at solutions that offer:
Although recent cases of attacks on public clouds have been on environments and production companies (those used by your customers), the attackers are all as likely to target your IT capacity, that is to say, your environments, development, and quality analysis, for cryptojacking for example.
You need top cloud application security solutions that can secure all your environments (PROD, DEV, and QA) reactively, but also proactively. The solution must be able to handle all your logs activities (VPC flow logs, CloudTrail logs, etc.) to identify incidents that have already occurred products, for example when an unwanted port is opened in the firewall.
Thus, vulnerabilities introduced into the code are detected long before the latter is deployed on your servers, thus preventing you from making the next headlines.
This advice may seem surprising in a guide to the public cloud, but the security of your local infrastructure is the result of decades of experience and research. When it comes to protect your cloud servers against infection and data loss, start by thinking what you are already doing for your traditional infrastructure and adapt it for the cloud: