More and more companies are moving their data, email, and applications to the cloud, but security often lags behind. Cloud security is not a one-off project, but an ongoing discipline that combines people, processes, and technology. In this guide we explain what cloud security actually is, the risks you face when securing cloud applications, and the concrete measures that protect your business. At the end you will find a 10-question cloud security check. Want to discuss your situation directly? Explore our managed cloud security for business via Secure Cloud.
What is cloud security?
Cloud security is the combination of technology, processes, and policy used to protect data, applications, and infrastructure in the cloud against unauthorized access, data breaches, and cyberattacks. Unlike a traditional office network, your organization's perimeter no longer ends at the front door: employees work from any device and any location.
Good cloud security therefore centers on protecting *identities and access* rather than just the network. Who may access which data, from which device, and under what conditions? That is the core of modern cloud security for business.
Why cloud security is essential for business
The shift to Microsoft 365, Azure, and SaaS applications delivers flexibility, but also expands the attack surface. Three developments make cloud security urgent:
- Identity is the new target: Phishing and stolen passwords are the most common route to company data. Without multi-factor authentication (MFA), one leaked password is enough to get in.
- Laws and regulations: NIS2, GDPR, and industry requirements oblige organizations to demonstrably stay in control of their cloud environment.
- The cloud provider doesn't secure everything: Microsoft secures the infrastructure, but your data, configuration, and access management remain your responsibility (the *shared responsibility* model).
The biggest risks when securing cloud applications
When securing cloud applications, we keep seeing the same weak spots:
- Misconfiguration: Default settings that are too permissive, public storage, or guest accounts with excessive rights.
- Missing MFA: Accounts without a second verification step remain the single biggest risk.
- Shadow IT and BYOAI: Employees using uncontrolled apps or AI tools, putting data out of sight. Read more about the risks of shadow AI.
- No visibility into anomalous behavior: Without monitoring, you only notice a breach when it's too late.
How to secure your cloud applications: 6 measures
Securing cloud applications starts with getting the basics right. These six measures deliver the most security per euro invested:
- Enable MFA for everyone: The cheapest and most effective measure that exists.
- Apply Conditional Access: Grant access based on user, device, location, and risk instead of a password alone.
- Manage devices with Intune: Ensure only managed, up-to-date devices can reach company data.
- Protect against phishing and malware: With Microsoft Defender for Business or Defender for Office 365. See also our comparison of E3 + EMS versus Business Premium.
- Centralize password management: A business password vault with Bitwarden prevents reuse and weak passwords.
- Monitor and respond continuously: Detection of anomalous behavior plus a process to intervene quickly.
Cloud security check: how does your environment score?
Want to know whether your cloud security is in order? Run through this cloud security check. Every question you answer with "no" or "I don't know" is an action item.
- MFA: is multi-factor authentication enforced for all accounts, including administrators and external users?
- Conditional Access: is access restricted based on device, location and risk, rather than a password alone?
- Admin privileges: are there only a handful of Global Administrators, using separate admin accounts that are not used for daily work?
- Device management: can only managed, up-to-date devices reach company data, or also personal laptops and old phones?
- Guest accounts and sharing: do you know which external users have access, and do sharing links expire automatically?
- Email security: is protection against phishing and malware in place (Defender for Office 365 or Defender for Business), and are SPF, DKIM and DMARC configured correctly?
- Backup: is Microsoft 365 data (mail, SharePoint, OneDrive, Teams) backed up separately, independent of the default recycle-bin retention?
- Monitoring: does someone get alerted on a suspicious sign-in or mass download, and what happens next?
- Shadow IT and AI tools: do you have visibility into which apps and AI tools employees use with company data?
- Evidence: can you show for NIS2 or an audit which measures you have taken and when?
If you answer "no" to three or more questions, it is worth having a professional cloud security check done. Universal Cloud reviews your Microsoft 365 and Azure environment on these points and delivers a prioritized action list. Request a no-obligation cloud security check.
Cloud security as a managed service
Many SMBs lack the knowledge and manpower to monitor cloud security around the clock. A managed security partner takes the setup, monitoring, and tuning off your hands, from securing your cloud applications to incident response and reporting for NIS2 and GDPR.
Universal Cloud is ISO 27001-certified and helps businesses with complete managed cloud security via Secure Cloud: identity protection, endpoint protection, monitoring, and compliance under one roof.
Ready to secure your cloud?
Cloud security is not a luxury, but a prerequisite for working safely and compliantly in the cloud. Start with the basics (MFA, Conditional Access, and endpoint management) and build from there. Want to know how your cloud environment stands? Contact Universal Cloud for a no-obligation cloud security check.
