Home Blog 19 Cloud Security Challenges and How to Mitigate Risk Published: May 15, 2026 19 Cloud Security Challenges and How to Mitigate Risk By: Brenda Buckman Cloud security challenges commonly include misconfigurations, human errors, and weak identity and access management. These challenges can all lead to vulnerabilities that may result in data theft and loss. Your data moved to the cloud to help your business scale—but the attackers moved right along with it. The traditional office perimeter has slowly vanished, making cloud security challenges an increasing concern for businesses. For a growing organization, the shift to a cloud security solution provides incredible flexibility, but it also creates a complex web of identities and settings that are notoriously difficult to manage. If you aren't actively watching these configurations, you're essentially leaving your digital front door unlocked in a neighborhood that never sleeps. Below are the top cloud challenges facing organizations in 2026 and what you need to know to stay ahead of them. 1. Misconfigurations In the cloud, your security is defined by your settings rather than a physical perimeter. A misconfiguration is essentially a digital “whoopsies”—like leaving an Amazon S3 bucket set to public or forgetting to restrict a database. Since cloud tools are built for easy sharing, they often default to being open, leaving the heavy lifting of security to your team. It can only take one wrong click to turn a private folder into a public link. Threat actors don’t need to break in when this happens; they just walk through the unlocked door. For growing businesses, keeping track of every toggle in Microsoft 365 or Google Workspace is a lot to ask, but these tiny oversights are often what lead to the biggest leaks . 2. Human error Cloud settings can be confusing, and even the most seasoned teams make mistakes. The sheer volume of settings and features inside platforms like Microsoft 365 can trip up anyone. When you’re moving fast to support a growing business, it’s easy to overlook a single checkbox that governs how data is shared or who can access a specific app. A classic slip-up is leaving a storage bucket public, thinking it’s only accessible to your team when it’s actually open to the entire internet. Sensitive files get exposed simply because a user tried to make a task easier and accidentally bypassed a security rule. These small, human moments are exactly what threat actors look for to get a foot in the door. 3. Weak identity and access management Often, people have way more access than they actually need. It’s tempting to give everyone “Global Admin” status to avoid IT tickets, but that’s like giving every employee a master key to the entire building. If an attacker steals just one of those sets of keys, they have free rein to creep around your most sensitive data. Stolen credentials are still the top way attackers get into your cloud. When identity rules are loose, a single compromised password lets an adversary move sideways through your network. They don’t have to work hard to find your crown jewels if your setup already gives them a straight path. Keeping access tight means that even if one account is hit, the rest of your business stays safe. 4. Data breaches and loss A cloud data breach not only makes headlines but is also a massive headache for any company. Whether it’s sensitive customer info or internal IP, once data leaves your cloud, you can’t get it back. Often, this isn't about a complex heist—it's just someone syncing a local folder to a personal cloud or a guest user having permissions they should've lost months ago. The fallout is both lost files and the hit to your reputation while you scramble to notify everyone involved. For a growing business, the cost of cleaning up after a breach can be a heavy lift. It’s why keeping a close eye on where your data lives and who is touching it is so important for staying resilient. 5. Insecure APIs Think of APIs (application programming interfaces) as the doors that let your different cloud apps talk to each other. They’re great for getting work done fast, but if those doors aren't locked, anyone can walk right in. If an API is left open or poorly protected, it creates a direct path for someone to pull data from your cloud without ever needing a set of credentials. Attackers specifically target APIs with weak authentication to stay under the radar while stealing sensitive information. It’s a common gap for scaling businesses that rely heavily on third-party integrations. Without a watchful eye, these connections can become the weakest link in your security posture, letting outsiders bypass your usual defenses. 6. Visibility gaps You can’t protect what you can’t see. When you use multiple providers—like Microsoft 365 for email but n Google Workspace for managing files—you often end up with blind spots. Each platform has its own logs and alerts, and jumping between them makes it easy to miss the trail of an attacker moving from one to the other. These gaps are a major win for threat actors. If your small IT team is stuck looking at three different dashboards, they might not see a suspicious login in one place that matches a weird file download in another. Creating a single, unified view of your endpoints and identities is the only way to make sure no one is hiding in the corners of your cloud. 7. Shadow IT Shadow IT happens when people use apps or cloud tools that your IT team doesn't know about. Usually, it's just a teammate trying to be more productive—maybe they find a free PDF converter or a project management tool that’s easier to use. But because these tools aren't vetted, they often lack the security controls your business needs to stay safe. This creates massive blind spots where your cybersecurity isn't being managed at all. If an employee puts sensitive company data into an unapproved app, you have no way to see who else is looking at it or if that app's security is up to snuff. It’s a quiet risk that turns your organized cloud into a wild west of unmanaged data. 8. Skilled staff shortage The cloud moves fast, and finding people who know how to secure it is a struggle. There’s a massive gap between the number of open security roles and the number of people with the right skills to fill them. For a growing business, trying to hire a dedicated cloud security expert can feel impossible when you're competing with the giant tech firms for the same talent. This shortage means small IT teams often have to be “jacks of all trades” (and masters of none). When you’re busy fixing printers and managing servers, it’s hard to find the time to become an expert in the latest Microsoft 365 security patches. This is where many businesses get stuck—they have the tools, but not enough hands on deck to keep watch 24/7. 9. Supply chain and third-party risks Your security is only as strong as your weakest link. That’s the saying, right? In today’s cloud-first world, your business likely relies on dozens of outside software providers and vendors to get work done. If one of those partners has a weak link , that vulnerability can travel straight through the connection and into your own environment. A breach at a software provider can quickly become a breach for you. Attackers target tools used by thousands of companies to gain a backdoor into all of them at once. For lean operations, it means you have to vet your vendors carefully. When you trust a third-party app with your data, you’re trusting their security team as much as your own. 10. Compliance and regulations Keeping up with rules like GDPR, CMMC, or HIPAA is a full-time job. Each region and industry has its own set of requirements for how you handle data, and the cloud adds a layer of complexity because your data might be sitting on a server halfway across the world. One mistake in how you store customer information can lead to heavy fines and unwanted attention. The challenge is that compliance isn't a one-and-done task. As you grow and use more cloud services, staying non-compliant becomes a real risk. It’s hard for a small IT team to keep track of every changing law while also keeping the lights on. You need a way to see if your cloud settings actually meet the standards you're held to, or you're just crossing your fingers and hoping for the best. 11. Account hijacking Account hijacking is exactly what it sounds like: an attacker takes over a legitimate user’s cloud account to act on their behalf. This is a favorite move for threat actors because once they’re in, they don't look like an intruder—they look like your coworker. They can send emails, change settings, or download files without raising red flags. We often see this start with a simple phishing link or a reused password. Once the attacker gets in, they often set up email forwarding rules to steal sensitive info or divert payments. For scaling businesses, this is why Managed ISPM is so important—it helps you spot the shady behavior that signals an account is no longer under your control. 12. Insider threats Not every threat comes from a shadowy figure outside your business. An insider threat is someone with legitimate access—like an employee or a contractor—who uses it to cause harm. While we often think of disgruntled people looking for a payday, many insider threats are actually accidental. A person might share a folder with the wrong permissions or move data to a personal device just to work from home more easily. Whether it’s a mistake or a deliberate choice, the result is the same: your data is exposed. These are some of the hardest risks to catch because the person is supposed to be there. This is where having a clear view of identity behavior helps. By looking for patterns that don't fit—like someone downloading a massive amount of data at 3am—you can catch a problem before it walks out the door. 13. Denial-of-service attacks (DDoS) A distributed denial-of-service (DDoS) attack is like a