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SaaS security is the protection of Software as a Service (SaaS) applications, to minimize the risk of unauthorized access, shadow IT and any other misuse of them that could result in a data breach or disruption to an organization’s IT operations. SaaS security requires deep visibility and granular access control.
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It depends on how well access to them is secured.
Although SaaS providers do secure SaaS applications themselves through critical measures such as encryption, an organization is not truly safe unless all of this cloud software is also secured at its points of access and granularly monitored. Applications need tight access controls, such as secure web gateways (SWGs) and cloud access security broker (CASB) solutions, paired with SD-WAN infrastructure as part of a secure access service edge (SASE). Plus, they must also be transparent to IT security teams.
But adding all of this layered cybersecurity must not come at the cost of a diminished user experience. In other words, SaaS security must be fundamentally different from traditional security architectures, namely those built around MPLS WANs, which enforce their protections by backhauling all traffic through a data center. This setup degrades the usability of key cloud applications such as Microsoft Office 365 and Google Workspace.
This term refers to the use of applications, typically ones in the cloud like SaaS, that have not been approved by IT. In some organizations, shadow IT may actually represent a majority of all SaaS consumption. This practice carries severe cybersecurity risks, since unvetted applications are not guaranteed to be properly secured, either in and of themselves or at the access level. Personal email domains and social media usage are notable examples in this category.
Cloud applications, including SaaS software, require significant bandwidth, a fact that impacts SaaS security and control in two big ways:
Related to the above, unsanctioned apps — or even approved ones that simply lack secure internet access — may leak sensitive information, precipitating a costly data breach. For example, an employee may freely use a personal cloud storage account to upload confidential data and then download it later on a personal device, increasing the chances that it makes its way into the outside world.
SaaS software isn’t bound by specific locations or devices. Broad network access, from virtually anywhere, is an integral part of its value proposition, as well as a risk for the typical IT security team as it struggles to control how employees use SaaS apps. Visibility across all locations, backed by granular access controls, is essential to preventing misuse.
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Proper SaaS access security, e.g., all security that is not within the purview of the SaaS vendor/SaaS provider itself, is essential to running a modern organization, and it has two main pillars:
Organizations must know what SaaS apps are being used, by whom and in which locations. They should be able to track the most used apps, associated levels of traffic and any malware that was blocked, among other things.
Productivity, social media and every other type of SaaS application must be carefully restricted in line with security team policies. For example, Google applications can be limited to company domains, while Facebook actions, such as uploading photos, can be tightly controlled.
Between them, these two pillars provide the support necessary to reach all of the aforementioned SaaS security goals. Those include the delivery of a secure yet productive user experience from any location or device and the mitigation of shadow IT.
Achieving holistic visibility and granular control requires a specific mix of solutions. A few of the most important include:
A SWG is a service that filters network traffic, including for SaaS applications, and enforces applicable security policies. IT sits between an end user and the internet, serving as a pivotal intermediary for screening out malware as employees connect to each SaaS vendor’s app.
CASBs consolidate numerous types of access-related cybersecurity. They may enforce single sign-on, device profiling, multi-factor authentication and malware defense, for instance. Like SWGs, they function as a sort of cybersecurity gatekeeper for SaaS access.
DLP solutions reduce the risk of data leakage by controlling what types of data users can access on their devices, how that information is transmitted over the network and where and how it is stored. This DLP software curbs the danger of data breaches and SaaS misuse.
All of these cybersecurity tools, alongside others, can be incorporated into a SASE architecture. Such protections work in tandem with SD-WAN infrastructure to deliver predictable and secure application performance from anywhere.
Citrix offers multiple secure access solutions that protect SaaS software, led by Citrix Secure Internet Access: